Endless Dungeon is a tower defense twin-stick shooter video game developed by Amplitude Studios and published by Sega.

While exploring, players would find new rooms which have generator spots that grant them new resources, including food, science, industry, medkits, and Dust Shards.

When the player dies or fails their objectives, they will respawn at a saloon bar area where they can talk to other characters and acquire upgrades and weapon attachments before they begin another run.

The squad size was reduced from four to three because the team felt that solo players would be overwhelmed if they are controlling and managing all four characters at the same time.

[8] The game is part of Sega's OpenDev program, in which selected players can experience targeted gameplay scenarios and provide feedback to the developers.