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Hold the line alone. Fight waves, build elevated cover, and unlock permanent tech in this action tower defense. 30 waves. 3 bosses. One heroic last stand.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Social Deduction Fest ends
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Solo Defending is a single-player action defense game where you protect a frontier fortress through escalating waves.
Action Tower Defense — Survive by combining combat skill with strategic fortress protection
Battlefield Shaping — Place, move, and upgrade elevated tiles between waves to redesign safe positions
Fail-Forward Progression — Earn tech points after each run to unlock permanent upgrades across 5 branches
30 Waves with escalating difficulty
3 Boss Milestones at waves 10, 20, and 30
Dual Loadout — Master both melee and ranged combat with unique playstyles
Roguelike Depth — Tech tree branches: Vanguard, Arsenal, Engineering, Survival, Fortress
Various Weapons — Unlock and master multiple melee and ranged weapons with unique playstyles
Suspend & Resume — Save progress mid-run
Will you hold the line alone?
