Starvoxel: Defender Merge TD

Merge tower defense with online co-op and PvP battles. Build your deck, merge defenders and protect the star. No ads. Optional in-app purchases.

MERGE FOR POWER
Drag a card onto an identical defender to merge them. One star becomes two, two become three, and damage doubles at every step. Plan your board, refresh or freeze your hand and choose the perfect moment to merge.

FACE GIANT BOSSES
The Dungeon has 100 levels across 10 depths, and every level ends with a boss. Break shields hit by hit, push through phase gates and survive summons, freezes and enrage. Every 10th level a guardian boss waits, all the way down to the Abyss King.

REAL-TIME PVP ARENA
Face a live opponent. Every defender you place also sends enemies down their lane. Win trophies and climb from Stone to Legendary. If no opponent is found within seconds, you face an AI opponent that is clearly labelled.

DEFEND TOGETHER IN CO-OP
Invite a friend or get matched with a partner for co-op tower defense: two lanes, one shared core. Clear 5 co-op arenas with 5 runs each and climb from Rookie to Nightmare difficulty.

COLLECT AND EVOLVE
Collect defenders with distinctive play styles, each with its own ability. Level up your cards, open packs and choose one of three evolutions for every defender. It activates when that defender reaches three stars.

FEATURES
• Merge tower defense on a 3x3 board
• 8-card decks you can save and share
• 100-level Dungeon with a boss on every level
• Real-time 1v1 PvP with trophies and leagues
• Online co-op with friends or matched partners
• Defenders with unique abilities and tactical evolutions
• Daily rewards, seasonal battle pass, leaderboards and achievements

NO ADS. EVER.
No banners, no interstitials, no rewarded videos. Not now, not later. Starvoxel: Defender is free to download and offers optional in-app purchases. Arena and co-op require an internet connection.

Recent changes:
Expanded arena artwork for landscape tablets and larger screens.
Added Finnish, Indonesian, Malay, Norwegian Bokmål and Traditional Chinese.
Cards and the board respond immediately during boss announcements.