Omori characters ages and game timeline
Based off the technology that is shown in Omori I’ve determined that Omori is set in 1990 for the past and 1994 for the present.
On Basil’s birthday (February 18) he took a photo of Sunny holding what looks to be a Gameboy. The Gameboy came out on April 1989 and was popular at the time of its release, and stayed popular throughout the 90’s and early 2000. So the earliest the game could be set for years in the past is 1989.
The Gameboy is colored red, which colored Gameboys came out 1998. But the creator was born in 1991 so I could see there being some generational inconsistencies if the game is set in 1989.
Basil’s first photo was on December 25, so it’s possible he got his camera on Christmas Day. We only get to see his camera 4 years after Mari died, and possibly in headspace. His camera looks like a 1990 Polaroid camera.
In Kel’s room you can see a boombox, a TV, and some sort of gaming device. It looks to be a boombox from the 80’s to 90’s. Boomboxes were primarily popular in the 80’s, so it’s possible he got it when he was younger. The TV looks like a 1990’s Box TV and his gaming device looks like a Nintendo Entertainment System (NES). The NES came out in 1985, and became popular in the late 80’s and early 90’s.
At ‘Hobbeez’ there is a NES, and another console that looks like a Super Nintendo Entertainment System (SNES). The SNES came out in 1990. However, the controller looks like a PlayStation controller. The PlayStation came out 1994. So it could be inspired off of the two devices from that time.
The computer in Sunny’s room looks like a computer from the early to mid 90’s. The cordless house phone looks like a 1994 house phone. You can also find one in Hero/Kel’s house. So the phone is at least a little popular.
So with that I believe that the year Mari dies is 1990, and the present day is 1994.
Also, I believe that these are the characters ages and dates of birth in chronological order:
Hero: January 1, 1975. Mari: March 3, 1975. Kel: December 11, 1977 Basil: February 18, 1978. Aubrey: May 23, 1978. Sunny: July 20, 1978.
(If anything seems out of place please do correct me!)