Coldlight: Idle Tower Defense

Patch and Prompt LLC

Contains adsIn-app purchases

About this game

One tower. Every direction. How long can you hold?

Coldlight is an idle-hybrid tower defense built around a single core. Active runs are the heart of it: build your tower, manage your economy, push deeper every attempt. Idle earnings give you a head start when you return, never a stand-in for actually playing.

ACTIVE PLAY
Your tower auto-fires, but the decisions are yours. Spend Cash mid-run on temporary upgrades: heavier payloads, faster fire cycles, hardened core plating. Every run ends on your terms: fight to the last, or bank your earnings and retreat.

NO-NONSENSE MONETIZATION
No energy timers. No loot boxes. No premium currency. No paywalls. Optional rewarded ads for bonus Cores and idle boosts if you want them, never required. One-time Remove Ads, Founder's Pack, and Supporter Pack if you'd like to support development. That's the whole list.

THREE ECONOMIES
Cash fuels the current run and resets when it ends. Cores fund permanent Workshop upgrades between runs. Shards come from prestige resets and buy multiplicative boosts that compound across every future run.

WORKSHOP AND PROGRESSION
Permanent upgrades across offense, defense, economy, and idle efficiency. Invest Cores to push deeper. Clear waves to unlock gated upgrades and higher difficulty tiers, each one scaling enemy health and payouts harder than the last. Prestige when you're ready to reset for Shards and run the loop back faster.

COMPETE (OPTIONAL)
Sign in to Google Play Games for a weekly leaderboard and achievements. The board resets every week, so a deep run always counts. Skip it entirely if you'd rather just play.

IDLE LAYER
Coldlight banks a capped Cash bonus while you're away. The longer you're gone, up to a limit, the stronger your next run starts. It's a genuine head start, not a replacement for sitting down and playing. Collect it or skip it.

FIVE THREAT TYPES
Basic intrusions, fast skirmishers, armored tanks, fragile swarms, and periodic bosses, each with distinct behavior. Every wave scales harder. Bosses are the skill check.

Upgrade names might look familiar if you've spent time in a terminal.

No tricks, no timers, no pressure. Just a tower, some hard waves, and decisions that matter.