I have seen people complain that yeti robot zombies cannot exist, because a robot cannot be a zombie. These people were surely joking, since nobody could have missed the over-the-top action movie and shooter game cliche's that pervade Attack of the Yeti Robot Zombies. This is a game that does not take itself seriously. The highly secret base of the evil boss turns out to be a huge skycraper in the middle of a big city, adorned with inverted neon crosses and a statue of a yeti robot zombie.
Attack of the Yeti Robot Zombies is a 'win on the first attempt' game: you are asked not to save/restore, but to try to finish the game on the first attempt. Since (a) the game is quite short, and (b) the game is not too difficult, this doesn't pose any real problems, and it adds an interesting sense of danger. But save and restore are not disabled, so if you are a real wimp, you can use them.
So what do you do, as player? Well, you walk along the linear path set out for you, getting rid of zombies and cultists as well as you can, and finally reach the end. You will probably be tempted to restart at that point and try to find better solutions, because the game is both funny and short.
This is not a 'good' game. There is no storyline to speak of; there is no depth; no character interaction; nothing that makes it stand out. Attack of the Yeti Robot Zombies is an enjoyable snack, and the 'win on the first attempt' clause is a great idea for a game like this. Play it for the quick fun it will give you.