dino slotOfficial Dinosaur Tiers: TIER ONE: 10 Per Group, TIER TWO: 5 Per Group, TIER THREE: 3 Per Group, TIER FOUR: 2 Per Group, TIER FIVE: 2 Per Group.Description of Dino Slot. Here is the video game Dino Slot! Released in 1994 on Windows 3.x, it's still available and playable with some tinkering.