WAXTycoon is a simple incremental game and is currently listed at #10 at Top WAX Dapps with ~1.79k users.
The basic idea of the game is that after incrementally increasing your income of in-game currency and getting in the top 20, you can request a prestige (reset to 0) and earn gems based on the score you had. GEMs can be exchanged for WAX or used to purchase in-game speed-ups to make your next run faster.
As a new player at first I was not aware of the CPU usage of WAX network transactions and even if I had ~100 WAX staked, I was left very soon out of CPU.
WAX resources can be checked either in the https://wallet.wax.io/ or https://wax.bloks.io/.
I tested the CPU usage before and after leaving WAXTycoon to run and auto-upgrade buildings for 10 minutes.
Before test: 
After test: 
In 10 minutes, 70 upgrades (transactions) have been made on the WAX network.
This helped me watch my CPU usage and stop when a certain threshold is met, so I have CPU left for other games that use the WAX Blockchain.
I hope it helps you too.
Links:
https://en.wikipedia.org/wiki/Incremental_game
