Signal detected • Est. 1947

Arcade 51™

Retro neon arcade in your browser. Tap a cabinet and play, no download.

Operation 51Free to play · no sign-up▶ Play now

Alien BreakoutFree to play▶ Play

Star Castle SiegeFree to play▶ Play

Weekly TournamentWin this week's trophy▶ Play All games ›

Top 5 Played Games

The five most-played cabinets right now, ranked by live leaderboard activity.

See all leaderboards

Weekly Tournament Champion

Every Monday the top three members on the weekly tournament board win gold, silver and bronze trophies, and the champion takes this spot. See this week's standings.

★ New • Free Play Cabinet

Operation 51

No Retreat

Drop behind enemy lines in a jungle warzone where your weapons fire on their own. Dodge endless waves, level up your arsenal, rescue POWs, and take down tanks and gunships. Vampire Survivors meets Commando — free to play right now.

▶ Play Free Unlock the Full Operation

Free Play runs a 5-minute mission. All Access members get the full 15-minute operation, boss fights, and extraction.

Game Idea Contest

Got an idea for an arcade game? Send it in. If your idea wins, Arcade 51™ may build it into a playable cabinet game, with your gamer tag in the credits or no credit at all. We never ask for your real name.

How to enter

Your idea must be your own original game idea.
Read and accept the contest terms to unlock the submission form.
Choose gamer tag credit or stay anonymous if your idea is used.

Enter the Game Idea Contest

Intro Membership Unlock

$1.99per month introductory price

Unlock member-only cabinets
Save scores to Arcade 51 leaderboards
Join the neon arcade community

Join for $1.99 See the Games

Members Get More

Unlock every member-only cabinet, save your scores to the global leaderboards, and join tournaments — all for less than a cup of coffee a month.

Classified // Division 51

The arcade is a cover story.

Arcade 51 was built over a 1947 crash site. Members are recruited as agents: every real score earns Signal XP to buy clues and alien artifacts, collect badges, and get closer to what's sleeping under the Game Room.

XP from every game you play, plus Daily Challenge bonuses
Common, Rare and Ultra Rare badges, including leaderboard badges
Recover the Prime Core to unlock a hidden game

Report to Agent HQ Join for $1.99

Top Secret

FILE 51-47 // AGENT DOSSIER

Agents are already on the case.

Arcade 51 Video Signal

Kevin Feature

Get a look inside Arcade 51 before you visit — see what members are talking about.

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