Bit messy round the edges, but good nevertheless.
This was a cool game. The graphics and music could have used some work, those were the only things bugging me. Now, in usual spoil-sport pattern, I shall give a short walkthrough for the first part.
***SPOILER WARNING!***
1. Go to the very left screen, and an alien will pop up.
2. Click on him, before he gets you.
3. Go to the screen with the monkey on, and click on the hole next to his cage.
4. He will tell you some numbers, remember them.
5. Go to the screen with the door on, and go inside.
6. Press the control panel thing, and go out to the very right-most screen.
7. Press the red button, and go down the hole.
8. You're up against the alien again, that's all the walk-through for now.
Please, somebody write another review, the walkthrough shouldn't be on the front page in my opinion.