
In Dinosaur Game, the player operates Lonely T-Rex, a tyrannosaur that proceeds continually from 
left to right across a desert with only two colors, black and white. Along the journey, the user will be 
required to leap or kneel over obstacles like cacti and pterosaurs. If the player uses space (on the 
keyboard) or contacts the dinosaur (on mobile), the dinosaur will "jump" instantaneously, while 
pressing the key will cause it to "crouch down." The game's pace will progressively increase over 
time. When the character of Lonely T-Rex collides with any obstacle, the game will terminate 
abruptly. 
 
When a player reaches approximately 700 points, the game's display will alter. Dark gray on white 
graphics will transform into light gray on black graphics to represent the transition from day to night, 
with the daytime graphics of the sky also transforming into nighttime graphics.[a] During gameplay, 
the game will alternate from day to night and back again.The designers of this game have 
established a time limit of approximately 17 million years for any participant to achieve the utmost 
score. This is also the entire amount of time that tyrannosaurs existed prior to their extinction 66 
million years ago.