Try out the newest version of PTD.

Hotkeys:

• L – Build laser tower
• M – Build missile tower
• G – Build gattling tower
• S – Fire Small Missile
• N – Launch Nuke
• W – Spawn Next Wave
• U – Upgrade Selected Tower
• [space] – Pause/Resume
• [esc] – Cancel Tower/Missile

Source:

• Repository
• Wiki and Issue Tracker
• ptd.js
• jsfprocessing.js
• Processing.js

MIT License , by Will Larson and Peter Burns

Sound effects are released under a Creative Commons Sampling Plus 1.0 License - For authorship information, see here