Disclaimer: Haven't played this as it's Steam-only. However, this appears to be a blatant clone of Nodebuster, featuring an identical gameplay loop, similar skill tree, and matching visual style and theme. The demo video suggests a severe lack of quality control (it starts with a misspelling, and claims that you're protecting Vault Corp while the store page says you're assaulting it). However, if none of that is a dealbreaker, the demo is free.