Valley of Wolves Ambush is a wave-defence shooter with one job: hold the fortress. You can't leave the area, the waves get larger, and money from kills buys better weapons between them.
The unusual part is the jump — it's absurdly high, which turns the fortress into a vertical space and gives you angles the enemies can't easily counter.
Hold the fortress against escalating waves. The game ends if the enemies capture it or you're defeated.
It's deliberately exaggerated — you can jump very high, which turns the fortress into a vertical space and gives you firing angles enemies struggle to answer.
Yes, though it's a 3D shooter — close other tabs on older hardware.