several annoying issues (no keyboard shortcuts for towers, game is auto-pausing when leaving game window - very annoying, sell price of damaged towers same as non-damaged, can pass many times through the same mission - it kills the scenario, no point in making some of upgrades), but general idea and gfx is nice - so 4/5...
no keyboard control ? i have to click tower icons thousand times... pretty annoying... and - the game is boring... i give 3/5 because i like the graphics style...
The GUI sux in this game... No "intuitive" buttons (cannot see what is clickable, what can afford etc.). And, the game itself is totally "replicant"...