Voltspire: Idle Tower Defense

Voltspire: Idle Tower Defense is an endless idle strategy game where you defend your Spire from relentless enemy waves. Collect Scrap, unlock upgrades, and play free online to climb higher with limitless progression.

Click to place and upgrade towers defending your Spire. Collect Scrap dropped by enemies to power up your defenses. The battle plays itself, so just keep upgrading and climb higher.

Endless tower-defense progression that respects your time and your love of big numbers.

Q1: What is Voltspire: Idle Tower Defense? It is a free online idle strategy game where you defend your Spire from endless waves of enemies. Q2: How do you play Voltspire? Place and upgrade towers, collect Scrap from defeated foes, and climb higher as the run plays itself. Q3: Is Voltspire free to play? Yes, you can play Voltspire free online in your browser with no download required. Q4: Does progress continue while idle? Yes, each run makes you stronger automatically, so you keep progressing even when not actively playing.