You know, there is something like GUI.Button and GUI.Label if you did't know. Oh, and after first level it goes back to main screen without unlocking the next one.
I see you are using Unity pro? Am I right? I that case you could use so many incredible features such as realtime shadows, light probes and baked area lights together with glass and realtime reflection shaders. Nevertheless, I think the music is a little too boring, explosions are not powerful enough to easily jump gaps. Try adding some history too.
5/5 from me.
Very nice. It has climate of something strange, but you don't know what.
The character should move a little faster.
There should be more "strange actions" something appearing behind your back, a glimpse of something, temporary teleport, flying UFO etc.
Make it more psychological horror.
Take a look at this:
http://jayisgames.com/archives/2012/07/snowdrift.php
It is a perfect example of really scaring horror.
Incredible. However the beginning speech is much too long, it could have text showing for non-native speakers.
The game lags for me, that's because there is too much dirt particles everywhere. You should make the dirt a child of character and animate it globally. The mouse moves too fast I think.
Nevertheless, 5/5 for you.
Yeah, you are definitely right about the intro being too long. I was going to cut it down, but wasn't quite sure on which parts to keep in and what to cut. I will play around with it and try to make it shorter.
I also am aware of the lag issues. The particles are currently a child of the player, but it has to have a high energy and emission due to the character movement, and if these are too low then it doesn't appear quick enough unless the player stands still for the particles to re emit at the current location.
Thanks a lot for the comments and suggestions, much appreciated!
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Adding those buttons seem like a good idea. I'll do it in the next version. Thanks for the feedback!