
Outhold blends classic tower defense mechanics with an idle-style progression system that keeps your strategy improving over time. Each run gives you a chance to experiment with new tower builds, earn resources, and come back stronger for the next challenge.
Gameplay Overview
Defend the Holdout
Your mission is to protect the central Holdout from waves of geometric enemies moving along the path. By placing towers in strategic positions, you can intercept these invaders before they reach the core.
- Click to place towers or choose upgrades
- Click and drag to collect coins dropped by defeated enemies
Collect and Reinvest
As enemies fall, they drop coins that can be used immediately during the current run. These coins allow you to build additional towers or strengthen your defensive setup.
Economic towers play an important role in this system. Instead of focusing only on damage, these towers help generate more resources over time, making it easier to expand your defense and prepare for tougher waves later in the run.
Simple Tip
If you’re looking for a strong early strategy, focus on using Pulse towers to slow down approaching enemies. When enemies move more slowly, your damage towers have more time to attack, making it easier to clear waves and survive longer.







































