Horde shooters are about giving players something worth defending and making them afraid they will lose it. Players hold a position, clear a wave of enemies, earn currency, buy upgrades or repair barriers, and prepare for the next wave which is always harder. The game asks one question on repeat: can your team survive what comes next?

Build a horde game with the setting, weapon roster, and wave structure you want. Describe your barriers, your buy menu, your enemy types. Summer Engine builds the wave manager, the upgrade shop, and the enemy scaling. You focus on the encounter design and the co-op moments that make players scream at their teammates.

The best horde rounds escalate to breaking point. Players are out of ammo, barriers are down, and the last three players make a final stand in a corner. Those moments happen when the systems are tuned correctly. That tuning starts with designing the wave structure and upgrade economy you want to build.

• Teams building a co-op game that works for groups of 2-4 and needs a long-session engagement loop.
• Solo devs who want a complete game loop that is satisfying to tune and easy to extend with new enemy types.
• Designers inspired by Killing Floor, Deep Rock Galactic, or Left 4 Dead who want to build their own take on co-op horde.
• Anyone making a game with a strong wave defense identity: zombie defense, alien invasion, fantasy siege.

• Co-op Wave Defense

  Build a 4-player horde game with barrier repair, a buy menu between rounds, and escalating enemy types that require team coordination.

• Single-Player Survival Mode

  Build a survival mode that layers on top of a campaign game. Players try to last as many waves as possible on a leaderboard.

• Class-Based Horde

  Build a horde game where players choose distinct classes at the start: medic, heavy, support. Class synergy is required to handle later waves.