If you’re a fan of tactical auto-battlers, roguelikes, and deep team-building strategy, you’ve likely had Underboard on your radar.
Developed by Headless and published by 2 Left Thumbs, Underboard first hit Steam on February 6th, 2026, delivering a compelling mix of active and passive tactical gameplay. The momentum picked up in April with a sizable content update—expanding the playable roster while introducing fresh spells, items, and masteries.
Now, the developers are raising the stakes with their latest and largest free content update to date: The Endless.
This massive expansion doesn’t just refine the base experience—it completely overhauls the endgame to offer practically infinite replayability. Here is a breakdown of what makes The Endless a game-changer for new and returning players alike.
What’s New in Underboard: The Endless?
1. The Ultimate Test: Endless Runs
The main attraction of this update is the brand-new Endless Runs mode. Designed specifically for players who love pushing their builds to the absolute limit, this mode drops your fully optimised teams into the hardest, most brutal challenges the game has ever seen—complete with a brand-new final boss.
2. Attribute-Based Passive Skills
Building synergistic teams just got a lot deeper. Newly recruited characters now spawn with passive skills tied directly to their attributes. This opens up countless new strategy avenues and lets you experiment with team compositions in ways that weren’t possible before.
3. Tiered Quality System for Items & Spells
Looting in the Underboard is getting an upgrade! All items and spells now feature quality tiers. Higher-tier gear doesn’t just boost your raw stats; high-quality items and spells can trigger game-changing secondary effects, giving your synergies an extra punch.
4. Overhauled Horizon Paths
Late-game explorers will notice a massive visual and mechanical makeover. Horizon Paths previously remixed content from early zones, but they now feature dedicated custom visuals alongside a completely unique roster of enemies to keep endgame encounters fresh and unpredictable.
5. Boss Masteries
The update adds new narrative and tactical depth by linking boss interactions to combat perks. By accessing attribute-locked dialogue options during encounters with Zone bosses, you can unlock powerful Boss Masteries to carry over into future runs.
Why You Should Dive In Now
Whether you’re a veteran player looking to test your min-maxed compositions in Endless Runs, or a newcomer looking for a tactical roguelite with endless depth, there has never been a better time to jump into Underboard.
The base game’s core mechanics—balancing active spellcasting with passive mana reserves, draft-style team building, and positional auto-battling—feel tighter than ever thanks to these community-driven refinements.
Underboard is available now on Steam. If you’re ready to put your tactical skills to the ultimate test, update your game, draft your squad, and see how long you can survive The Endless!
Have you tackled Endless Runs yet? What’s your go-to team composition? Let us know in the comments below!
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