Simple Tower Defense

My first game ever, based on the tutorial from RealTutsGML, but with some additional tweeks. Just my way of learning to work with GameMaker so I can make my dream game one day :)

Please let me know what you think about it :)

Soon to be added:

• Improved map tiles
• Improved Effects (Particles maybe?)
• Improved GUI
• Improve hardness... Way to simple now...
• Splash Screen / Startup screen
• Different Maps/Rooms
• difficulty Levels “Easy, Medium, Hard, WTF!!!"
• Game over screen with score and restart button (Highscore possible?)
• Challenge Between Sprints?
• Tower Upgrades
• Boss Enemies
• Different Enemy Types
• Change enemies to Tanks/Trucks/UFO's or whatever...
• Change Towers to whatever looks nicer and fits with the enemies
• Sound effects

Bugs found so far:

• If enough coins, you can click multiple towers at once, and place them all on a single tile together..
• Game doesn't end when out of lives