21 Blitz

Overview

21 Blitz is a mobile card skill game published by AviaGames, the same parent behind Pocket7Games, Bingo Clash, and 21 Gold. The pitch is simple: you play timed rounds of a blackjack-meets-solitaire hybrid against another human, and whoever scores higher wins the pot. It launched as a free-to-play title with optional cash tournaments, and is available in most US states under the skill-game exemption. Cash play is blocked in Arkansas, Connecticut, Delaware, Indiana, Louisiana, Maine, Montana, South Carolina, South Dakota, and Tennessee, and Michigan regulators have been hostile to the entire AviaGames catalog.

How It Works

Each round gives both players the same deck and the same time limit. You build stacks of cards that sum to 21, clear streaks for bonus points, and try to burn through the deck faster than your opponent. Because both players get identical cards, the company markets matches as pure tests of pattern recognition and speed. That framing is central to the skill-game legal argument, and it is also the exact framing that landed AviaGames in court.

Welcome Offer / First Deposit Bonus

New players typically see a small first-deposit match (historically around $5 bonus cash on a $10 deposit) plus free practice rounds. Bonus cash can enter paid tournaments, but winnings routed through bonus balance carry playthrough conditions before they become withdrawable.

Game Library

21 Blitz is a single-title app, though it shares a wallet with the broader Pocket7Games bundle if you install the parent app. Modes include head-to-head, four-player tournaments, and scheduled prize events.

Banking

Deposits and withdrawals are handled via Apple Pay, PayPal, Venmo, and standard cards. AviaGames typically processes withdrawals within 24 hours after identity verification.

Ongoing Promos / Tournaments

Daily and weekly leaderboards, bracketed cash tournaments, and ticketed free-entry events rotate through the lobby. Entry fees range from pennies to ~$20, with prize pools scaled to participation.

Regulatory Reality

This is the section that matters most. In February 2024, a federal jury in San Jose returned a verdict against AviaGames in a patent case brought by Skillz, awarding roughly $42.9 million. During that trial, Skillz introduced evidence alleging AviaGames used bots internally referred to as “Cucumbers,” “Guides,” and a “shark robot” designed to target winning players. A separate class-action complaint (covering 21 Blitz alongside Bingo Clash and Solitaire Clash) accused the company of pitting paying users against computer opponents disguised as humans. AviaGames has disputed the framing, and a later settlement resolved the patent dispute for roughly $80 million in total value. None of this has been criminally adjudicated, but it is all public record, and players deserve to know before they deposit.

User Experience

The app itself is polished, fast, and genuinely fun as a free game. Opponent pools feel active, matches resolve in under two minutes, and the UI is cleaner than most competitors in the category. The shadow of the bot allegations is the only reason to hesitate.

The Bottom Line

21 Blitz is a well-built mobile card game from a publisher with unresolved trust issues. If you want to play for fun or tiny stakes, it is perfectly enjoyable. If you are planning to deposit meaningful money, read the court filings first and size accordingly. As always, play only what you can afford to lose, and visit 1-800-GAMBLER if real-money play stops feeling recreational.