i played the browser version. the game was pretty laggy but I played it all the way through and got all the upgrades.
a lot of the upgrades are not very useful:
- zombie speed
- wave gold (basically does not matter)
- wave time limit
- auto turrets (too weak compared to clicking)
- click precision (doesn't matter when you have aoe)
- 2% respawn chance (basically just 2% more zombies)
Aside from a few useful upgrades, grinding out the rest is pretty boring since they don't lead to any noticeable improvements.
At the same time, there is a lot of opportunity to make the game feel better.
- Shockwave should chain react across the map and basically kill every low-level zombie in one click at max level
- Autoturrets should scale with click upgrades as well and basically act fully like clicks
- If you're going to nerf wave gold until it doesn't matter, just remove it from the game. Either make it feel really good or just remove it. And make it scale with seconds so increasing wave time limit doesn't reduce the effectiveness of wave gold.
- Should be able to remove every civilian. Minus civilians is a great upgrade.
- Should be able to keep increasing zombie density by either spawning more zombies or shrinking the map
- Make it feel better to keep civilians alive. Not just a gold penalty, but for example, you can let civilians auto-fight zombies and give them upgrades to do more damage as well.
You can add real paths of specialization to the game: shockwave build paired with keeping zombie levels low and making zombies denser, civilian build paired with making clicks heal instead of damage, autoturret build, powerful click build focused on fighting a smaller number of giant zombies with huge single-target damage.
The geometric circle thing is a mess. Make organized tech trees.
A lot of potential here.