Pro:

• Four difficulty levels.
• Double speed option.
• You can build and use abilities while the game is paused.

Con:

• Options are limited to fullscreen/windowed and sound levels.
• Graphics ported directly from the mobile version.
• Lazy port with mobile features still intact (e.g. you have to buy upgrade slots).
• Respeccing the commander is expensive.
• Towers and abilities lack creativity.
• Levels take too long.
• Little variation in enemies.
• Too few placement options.

Conclusion

Sentinel 3 is not the worst TD i've ever played, but it is still soulless, boring and a poor mobile port to boot. I'm getting a refund even though i only paid €1,19 for this, that should say enough.