# Blackjack 21+3 - Play Free Online | FastPlayGames

> Standard blackjack plus 21+3 and Perfect Pairs poker side bets, played with virtual chips.

| Detail | Info |
|--------|------|
| **Play Now** | [Blackjack 21+3 on FastPlayGames](https://fastplaygames.com/games/blackjack-21plus3) |
| **Categories** | casino, card |
| **Tags** | casino, cards, classic, single-player, strategy |
| **Added** | 2026-03-12 |
| **Developer** | FastPlayGames |
| **Platform** | Web Browser (PC, Mobile, Tablet) |
| **Cost** | Free — no download, no sign-up |

**[Play Blackjack 21+3 Free Online](https://fastplaygames.com/games/blackjack-21plus3)**

![Blackjack 21+3 gameplay](https://fastplaygames.com/thumbnails/blackjack-21plus3.svg)

## About Blackjack 21+3

Two poker side bets bolt onto a standard six-deck blackjack table here, all played for entertainment with virtual chips and no real money wagered. You start with $1,000 and build your main bet additively using the +$10, +$25, and +$50 buttons, then optionally toggle on the 21+3 side bet ($5) and the Perfect Pairs side bet ($5). The main game follows familiar rules: blackjack pays 3:2, regular wins pay even money, ties push, and the dealer hits below 17 but stands on all 17s while the hole card stays face down until the dealer's turn. The 21+3 bet evaluates your two cards plus the dealer's up card as a three-card poker hand and pays immediately after the deal, while Perfect Pairs rewards any matching first two cards. Run your chips to zero and you bust out; your best chip total is saved as a local high score. The six-deck shoe reshuffles whenever fewer than 20 cards remain.

Blackjack 21+3 is a free casino game that you can play instantly on FastPlayGames.com. No download or registration required — just click and play on any device.

## How to Play Blackjack 21+3

Build your main bet with the +$10, +$25, and +$50 buttons, and optionally turn on the $5 21+3 and $5 Perfect Pairs side bets. Press Deal to receive two cards face up while the dealer takes one up card and one face down. Hit for another card, Stand to keep your total, or Double to double your bet and take exactly one more card (Double is disabled after you hit). Beat the dealer by getting closer to 21 without going over. The 21+3 bet resolves right after the deal from your two cards plus the dealer's up card; Perfect Pairs resolves if your first two cards match.

## Controls

Build your main bet with the +$10, +$25, and +$50 buttons, and toggle the $5 21+3 and $5 Perfect Pairs side bets on or off. Press Deal, then use the Hit, Stand, and Double buttons during play (Double is unavailable once you have hit). On mobile, tap the buttons.

## Blackjack 21+3 Tips & Strategies

1. Stand on hard 17 or higher and hit on hard 11 or lower to follow basic blackjack strategy.
2. Both side bets carry a higher house edge than the main bet, so treat them as occasional bonus action.
3. Double on 11 when the dealer shows a weak up card to press your advantage.
4. 21+3 pays Flush 5x, Straight 10x, Three of a Kind 30x, Straight Flush 40x, and Suited Trips 100x.
5. Perfect Pairs pays 6:1 for a mixed pair, 12:1 for a colored pair, and 25:1 for a perfect suited pair.

## Frequently Asked Questions

### What hands win the 21+3 side bet?

The $5 21+3 bet uses your two cards plus the dealer's up card and pays Flush 5x, Straight 10x, Three of a Kind 30x, Straight Flush 40x, or Suited Trips 100x, resolved immediately after the deal.

### What is the Perfect Pairs side bet?

Perfect Pairs is a separate $5 bet that pays if your first two cards form a pair: 6:1 for a mixed pair, 12:1 for a colored pair, and 25:1 for a perfect suited pair.

### What are the main-game rules?

Blackjack pays 3:2, regular wins pay even money, and ties push. The dealer hits below 17 and stands on all 17s, and the shoe uses six decks reshuffled when fewer than 20 cards remain.

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