[Puzzle] Another birthday puzzle[Solution posted]

The giveaways are now over! You can find the solution at the bottom of this post.

Hello All,

I've got a birthday on May 10th so I decided to make a puzzle and to give away few games. Here you can find the event from last year.

All giveaways end on May 10th, 21:00 GMT.

First of all, here are two freebies:

Bastion

Deponia

Now, about the puzzle. The puzzle type is the same as last year but this time there are 3 steps. There is a prize at the end of each step(80+ metascore non-bundle game giveaway at each step). EDIT: Added a bonus giveaway at step 3.

The puzzle - step 1

The standard puzzle rules – Do not share answers, hints, links or any other puzzle- or giveaway-related information!

30.01 contribution value required for the puzzle prizes.

Additional info and hints:

All images are direct associations with the game names themselves - there may be no connection to the game content/storyline etc, just the title is important. All answers are steam standalone games - there are no DLCs. Some games may be part of a franchise.

Google reverse image search may provide you with some ideas or keywords to use with Steam Store search.

Think about what is on the picture and why I chose this image(there should be something unusual or distinctive). This may provide you with some keywords/synonyms for the store search.

Step 1 Q6 - I have edited the original image I had found so that all three words of the game's name are expressed on it.

Step 1 Q7 - Popular indie non-bundle game.

Step 2 Q3 - Two words. The word "box" may help you(not part of the name itself).

Step 2 Q4 - Two different games are accepted as an answer. What is so distinctive in this picture?

Step 3 Q3 - Signal. Physics.

Step 3 Q4 - The material may hold the key.

And lastly, there is something common among all the games on the last step. This may narrow the scope for you if you have only one or two questions remaining.

Solution:

I have posted just the main answer but multiple spellings/editions were added as an alternative answers for most of the questions(e.g. all the steam games in the series).

Step 1(easy):

1. Devil May Cry
2. Universe Sandbox
3. Black Mirror
4. Hearts of Iron
5. To the Moon / Lunar Flight
6. Drunken Robot Pornography
7. Don't Starve

Step 2(medium):

1. Metro: Last Light
2. Gothic
3. Dynamite Jack
4. Killing Floor / Krater
5. Dead Pixels
6. NightSky
7. BioShock Infinite

Step 3(hard):

1. Thomas Was Alone
2. EDGE
3. Waveform
4. Knights of Pen and Paper
5. Hydrophobia: Prophecy

The common thing among all the games in step 3 was that they are all indie bundle games.

If you would like to know more about any particular answer please let me know.

Thanks to all the participants!