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

Learn how to play Super Fun 21, a blackjack variant that some say is more fun for casinos than it is for players due to unfriendly rules and high edge.

Updated 29 Jul 2026Section Casino Games11 min read

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.

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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.

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

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.

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

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