The last clue with number is: Made the number on the wall / the roman numeric as point of coordinate. Example the second row number is III (3), then the next dot to right is 4, 5, 6, 7, etc.
If you are new to make a flash game, it means you've made a pretty good game to be played. If not then u need to improve your digital drawing, game balancing, intro+outro/story, & flash effect trick.
SPiler -------------------------------------------------- Hint for the number with color: Take a look at the number of each color, ignore the black color & number/color alignment.
Spoiler alert: ------------------------------------------------------------------------number level, start from bottom example 918352321 : mean 9-1=8, 8-3=5, 5-2=3, 3-2=1.
 "Soul Core"){kind=icon}
 "Age of Rivals"){kind=icon}
 "Forgotten Hill: Fall"){kind=icon}
 "Forgotten Hill: Surgery"){kind=icon}
 "The Ritual"){kind=icon}
 "Boss Level Shootout"){kind=icon}
 "Bruce's fiery dream"){kind=icon}
 "Greetings from Potato Island"){kind=icon}
 "Mutant Fighting Cup 2016 - Cat Edition"){kind=icon}
 "Magical Myth 1"){kind=icon}
 "Strange Magic Escape"){kind=icon}
 "Yugioh! Rise of the cards"){kind=icon}
 "Political Wings"){kind=icon}
 "Enchanted Heroes"){kind=icon}
 "GrindQuest Censored"){kind=icon}
 "Torture Chamber III"){kind=icon}
 "Escape THE GAME"){kind=icon}
 "Super Battle City 2"){kind=icon}
 "Sequence"){kind=icon}
 "Reactor idle"){kind=icon}
Yes, there are four :)