How “Fun” is it? Super Fun 21 Rules & Strategy

Learn how to play Super Fun 21, a high-edge blackjack game that may be more fun for casinos than players.

Super Fun 21 is a blackjack variant found at a lot of land-based casinos, and a few online ones, too. The first question most people ask – if they bother to ask at all – is what makes the game so super fun? Not too much, to be honest. The only real fun to be had here is by any casino that offers it, thanks to some less-than-friendly rules.

Those rules are static no matter where you find it, with only one exception – the number of decks in the shoe. Super Fun 21 can be found in single-deck, double-deck and six-deck editions. As a matter of probabilities, the more decks there are, the higher the house edge will be. But again, the casino has a huge advantage in this game, regardless of shoe size.

Super High-Edge 21? RTP by Decks

Before I go into how the game is played, let’s take a quick look at the returns by number of decks in use. You may decide you want to avoid these tables altogether. If not, please continue scrolling to learn the complete rules and a very thorough strategy for all deck sizes and hand situations.

• 1 Deck = 98.84% RTP (1.16% house edge)
• 2 Decks = 98.70% RTP (1.30% house edge)
• 6 Decks = 98.60% RTP (1.40% house edge)

How to Play Super Fun 21

Let’s dive straight in here, because overall, this is just your standard game of blackjack. There are some player-friendly rules in the mix, and one very unfriendly rule to offset them.

To the player’s favor are limited 5-Card 21 and 6-Card 20 auto-wins. On the negative end is the payout for a natural blackjack. A blackjack in diamonds (both cards) pays 2 to 1, which is better than the usual 3 to 2. However, a blackjack in any other suit(s) will pay only 1 to 1, even money.

The exact rules are as follows:

Specific Rules of Play

• Decks: 1, 2 or 6
• Soft 17: Dealer Hits
• Doubling: Yes, on any number or value of cards
• Splitting: Yes, up to 3x (4 hands)
• Double after Split: Yes
• Draw to Split Aces: Yes
• Double to Split Aces: Yes
• Double Down Rescue: Yes
• Late Surrender: Yes, on any number of cards
• Dealer Checks for Blackjack: Yes
• Tie for Blackjack: Player Wins
• Blackjack Pays: 3 to 2
• 5-Card 21: Player’s 5+ card total of exactly 21 wins 2 to 1
• 6-Card ~20: Player’s 6-card total of 20 or below wins 1 to 1

Super Fun Blackjack Strategy

Below are a series of strategy charts for 1-deck, 2-deck and 6-deck Super Fun 21. Use the quick-access links below to find the right chart for your needs.

• Single Deck SF-21 Strategy
• Double Deck SF-21 Strategy
• Six Deck SF-21 Strategy

Note that the charts for each deck-size come with a three-layer strategy by hand type (hard total, soft total, pairs), as well as transitioning strategies for hard or soft 3-card, 4-card and 5-card hands. Remember, the edge on this game is already high. In order to make the most of your experience, you’ll have to work for those 5-card bonus payouts and 6-card auto wins.

Single Deck Super Fun Strategy

How to Decide a 2-Card Hard Hand (Single Deck)

Hard Total	Correct Action by Situation
8 & Under	Hit
9	Double against Dealer’s 2-6; otherwise Hit
10-11	Double
12	Stand against Dealer’s 4-6; otherwise Hit
13-14	Stand against Dealer’s 2-6; otherwise Hit
15	Stand against Dealer’s 2-6; Hit on 7-10; Surrender on A
16	Stand against Dealer’s 2-6; Hit on 7-9; Surrender on 10-A
17	Stand against Dealer’s 2-10; Surrender on A
18-21	Stand

How to Decide a 2-Card Soft Hand (Single Deck)

Soft Total	Correct Action by Situation
13	Double against Dealer’s 5-6; otherwise Hit
14-16	Double against Dealer’s 4-6; otherwise Hit
17	Double against Dealer’s 2-6; otherwise Hit
18	Double against Dealer’s 3-6; Hit against 9-A; otherwise Stand
19	Double against Dealer’s 6; otherwise Stand
20-21	Stand

Conditions for Splitting Pairs (Single Deck)

Pair	Correct Action by Situation
Ace-Ace	Split
2-2	Split on dealer’s 2-7; otherwise Hit
3-3	Split on dealer’s 2-7; otherwise Hit
4-4	Split on dealer’s 5-6; otherwise Hit
5-5	Double
6-6	Split on dealer’s 2-7; otherwise Hit
7-7	Split on dealer’s 2-8; Hit on 9; Surrender on 10-A
8-8	Split
9-9	Split on dealer’s 2-6 or 8-9; otherwise Stand
10-10	Stand

How to Decide a 3-Card Hard Hand (Single Deck)

Hard Total	Correct Action by Situation
8 & Under	Hit
9	Double against Dealer’s 3-6; otherwise Hit
10	Hit against Dealer’s 10; otherwise Double
11	Double
12	Stand against Dealer’s 4-6; otherwise Hit
13-14	Stand against Dealer’s 2-6; otherwise Hit
15	Stand against Dealer’s 2-6; Hit on 7-10; Surrender on A
16	Stand against Dealer’s 2-6; Hit on 7-8; Surrender on 9-A
17	Stand against Dealer’s 2-10; Surrender on A
18-21	Stand

How to Decide a 3-Card Soft Hand (Single Deck)

Soft Total	Correct Action by Situation
13	Hit
14-16	Double against Dealer’s 5-6; otherwise Hit
17	Double against Dealer’s 4-6; otherwise Hit
18	Double against Dealer’s 3-6; Hit against 9-A; otherwise Stand
19	Double against Dealer’s 5-6; otherwise Stand
20-21	Stand

How to Decide a 4-Card Hard Hand (Single Deck)

Hard Total	Correct Action by Situation
10 & Under	Hit
11	Double against Dealer’s 6; otherwise Hit
12	Hit
13	Stand against Dealer’s 4-6; otherwise Hit
14-16	Stand against Dealer’s 2-6; otherwise Hit
17-21	Stand

How to Decide a 4-Card Soft Hand (Single Deck)

Soft Total	Correct Action by Situation
17 & Under	Hit
18	Double against Dealer’s 6; Stand on 7; otherwise Hit
19	Double against Dealer’s 5-6; Hit on 10; otherwise Stand
20-21	Stand

How to Decide a 5-Card Hard Hand (Single Deck)

Hard Total	Correct Action by Situation
14 & Under	Hit
15	Stand against Dealer’s 5-6; otherwise Hit
16	Stand against Dealer’s 2-6; otherwise Hit
17	Stand against Dealer’s 2-8; otherwise Hit
18-21	Stand

How to Decide a 5-Card Soft Hand (Single Deck)

Soft Total	Correct Action by Situation
20 & Under	Hit
21	Stand

Double Deck Super Fun Strategy

How to Decide a 2-Card Hard Hand (Double Deck)

Hard Total	Correct Action by Situation
8 & Under	Hit
9	Double against Dealer’s 3-6; otherwise Hit
10	Hit against Dealer’s 10; otherwise Double
11	Double
12	Stand against Dealer’s 4-6; otherwise Hit
13-14	Stand against Dealer’s 2-6; otherwise Hit
15	Stand against Dealer’s 2-6; Hit on 7-10; Surrender on A
16	Stand against Dealer’s 2-6; Hit on 7-9; Surrender on 10-A
17	Stand against Dealer’s 2-10; Surrender on A
18-21	Stand

How to Decide a 2-Card Soft Hand (Double Deck)

Soft Total	Correct Action by Situation
13	Double against Dealer’s 6; otherwise Hit
14-15	Double against Dealer’s 5-6; otherwise Hit
16	Double against Dealer’s 4-6; otherwise Hit
17	Double against Dealer’s 3-6; otherwise Hit
18	Double against Dealer’s 2-6; Hit on 9-A; otherwise Stand
19	Double against Dealer’s 6; otherwise Stand
20-21	Stand

Conditions for Splitting Pairs (Double Deck)

Pair	Correct Action by Situation
Ace-Ace	Split
2-2	Split on dealer’s 2-7; otherwise Hit
3-3	Split on dealer’s 3-7; otherwise Hit
4-4	Split on dealer’s 5-6; otherwise Hit
5-5	Hit against Dealer’s 10; otherwise Double
6-6	Split on dealer’s 2-7; otherwise Hit
7-7	Split on dealer’s 2-8; otherwise Hit
8-8	Split
9-9	Stand against Dealer’s 7 or 10; otherwise Split
10-10	Stand

How to Decide a 3-Card Hard Hand (Double Deck)

Hard Total	Correct Action by Situation
8 & Under	Hit
9	Double against Dealer’s 4-6; otherwise Hit
10	Hit against Dealer’s 10-A; otherwise Double
11	Double
12	Stand against Dealer’s 4-6; otherwise Hit
13-14	Stand against Dealer’s 2-6; otherwise Hit
15	Stand against Dealer’s 2-6; Hit on 7-10; Surrender on A
16	Stand against Dealer’s 2-6; Hit on 7-8; Surrender on 9-A
17	Stand against Dealer’s 2-10; Surrender on A
18-21	Stand

How to Decide a 3-Card Soft Hand (Double Deck)

Soft Total	Correct Action by Situation
13-14	Hit
15	Double against Dealer’s 6; otherwise Hit
16	Double against Dealer’s 5-6; otherwise Hit
17	Double against Dealer’s 4-6; otherwise Hit
18	Double against Dealer’s 3-6; Hit against 9-A; otherwise Stand
19	Double against Dealer’s 5-6; otherwise Stand
20-21	Stand

How to Decide a 4-Card Hard Hand (Double Deck)

Hard Total	Correct Action by Situation
9 & Under	Hit
10	Double against Dealer’s 3-6; otherwise Hit
11-12	Hit
13	Stand against Dealer’s 5-6; otherwise Hit
14	Stand against Dealer’s 3-6; otherwise Hit
15-16	Stand against Dealer’s 2-6; otherwise Hit
17	Stand against Dealer’s 2-10; Surrender on A
18-21	Stand

How to Decide a 4-Card Soft Hand (Double Deck)

Soft Total	Correct Action by Situation
18 & Under	Hit
19	Double against Dealer’s 6; Hit on 9-A; otherwise Stand
20-21	Stand

How to Decide a 5-Card Hard Hand (Double Deck)

Hard Total	Correct Action by Situation
15 & Under	Hit
16	Stand against Dealer’s 4-6; otherwise Hit
17	Stand against Dealer’s 2-7; otherwise Hit
18-21	Stand

How to Decide a 5-Card Soft Hand (Double Deck)

Soft Total	Correct Action by Situation
20 & Under	Hit
21	Stand

Six Deck Super Fun Strategy

How to Decide a 2-Card Hard Hand (Six Deck)

Hard Total	Correct Action by Situation
8 & Under	Hit
9	Double against Dealer’s 3-6; otherwise Hit
10	Hit against Dealer’s 10; otherwise Double
11	Double
12	Stand against Dealer’s 4-6; otherwise Hit
13-14	Stand against Dealer’s 2-6; otherwise Hit
15	Stand against Dealer’s 2-6; Hit on 7-9; Surrender on 10-A
16	Stand against Dealer’s 2-6; Hit on 7-8; Surrender on 9-A
17	Stand against Dealer’s 2-10; Surrender on A
18-21	Stand

How to Decide a 2-Card Soft Hand (Six Deck)

Soft Total	Correct Action by Situation
13	Hit
14	Double against Dealer’s 6; otherwise Hit
15	Double against Dealer’s 5-6; otherwise Hit
16	Double against Dealer’s 4-6; otherwise Hit
17	Double against Dealer’s 3-6; otherwise Hit
18	Double against Dealer’s 2-6; Stand on 7-8; Hit on 9-A
19	Double against Dealer’s 6; otherwise Stand
20-21	Stand

Conditions for Splitting Pairs (Six Deck)

Pair	Correct Action by Situation
Ace-Ace	Split
2-2	Split on dealer’s 2-7; otherwise Hit
3-3	Split on dealer’s 3-7; otherwise Hit
4-4	Split on dealer’s 5-6; otherwise Hit
5-5	Hit against Dealer’s 10; otherwise Double
6-6	Split on dealer’s 2-6; otherwise Hit
7-7	Split on dealer’s 2-7; otherwise Hit
8-8	Split on dealer’s 2-10; Surrender on A
9-9	Stand against Dealer’s 7 or 10-A; otherwise Split
10-10	Stand

How to Decide a 3-Card Hard Hand (Six Deck)

Hard Total	Correct Action by Situation
8 & Under	Hit
9	Double against Dealer’s 4-6; otherwise Hit
10	Double against Dealer’s 2-9; otherwise Hit
11	Double
12	Stand against Dealer’s 4-6; otherwise Hit
13-14	Stand against Dealer’s 2-6; otherwise Hit
15	Stand against Dealer’s 2-6; Hit on 7-10; Surrender on A
16	Stand against Dealer’s 2-6; Hit on 7-8; Surrender on 9-A
17	Stand against Dealer’s 2-10; Surrender on A
18-21	Stand

How to Decide a 3-Card Soft Hand (Six Deck)

Soft Total	Correct Action by Situation
13-15	Hit
16	Double against Dealer’s 5-6; otherwise Hit
17	Double against Dealer’s 4-6; otherwise Hit
18	Double against Dealer’s 3-6; Hit on 9-A; otherwise Stand
19	Double against Dealer’s 6; otherwise Stand
20-21	Stand

How to Decide a 4-Card Hard Hand (Six Deck)

Hard Total	Correct Action by Situation
9 & Under	Hit
10	Double against Dealer’s 4-6; otherwise Hit
11-12	Hit
13	Stand against Dealer’s 6; otherwise Hit
14	Stand against Dealer’s 3-6; otherwise Hit
15-16	Stand against Dealer’s 2-6; otherwise Hit
17	Stand against Dealer’s 2-10; Surrender on A
18-21	Stand

How to Decide a 4-Card Soft Hand (Six Deck)

Soft Total	Correct Action by Situation
18 & Under	Hit
19	Double against Dealer’s 6; Hit on 2-4 or 9-A; otherwise Stand
20-21	Stand

How to Decide a 5-Card Hard Hand (Six Deck)

Hard Total	Correct Action by Situation
15 & Under	Hit
16	Stand against Dealer’s 5-6; otherwise Hit
17	Stand against Dealer’s 2-10; Surrender on A
18-21	Stand

How to Decide a 5-Card Soft Hand (Six Deck)

Soft Total	Correct Action by Situation
20 & Under	Hit
21	Stand