Do events in Junkenstein's Revenge happen at specific times?

After playing Junkenstein's Revenge a few times, I've started to notice a pattern in the order of events. Reaper spawns, then Roadhog, then Junkrat, then Reaper again, then Reaper again, then Mercy. Do these events happen at specific marks on the timer? Or do they happen a certain time after the previous boss was defeated? Additionally, are the tire spawns also scripted, or are they random?

Solution 1:

Yes. All spawns are scripted across all difficulty levels, and will happen at the same time every time. Here's a list of the most important spawn times to know, from reddit:

These times are based on time remaining.

• 5:32 Left tire
• 4:41 Reaper
• 3:53 Center tire
• 3:32 Left tire
• 3:24 Right tire
• 2:45 Roadhog
• 2:21 Right tire
• 1:45 Junkrat
• 1:30 Reaper
• 0:48 Tire x 2: Right+Left
• 0:33 Center Tire
• 0:22 Reaper
• -5 seconds Final battle

Note that spawns will happen regardless of whether or not a previous hero is still alive; it is possible to have both Junkrat and Roadhog on the battlefield at 1:45, for example.

Solution 2:

Yes, spawn times are scripted, even for the Zomnics. At the very start of the match, you'll notice that Zomnics always spawn in the same locations, in order: middle, left, right.

I don't have the exact times that Reaper, Roadhog, and Junkrat spawn (and I'm at work so I can't test right now) but if you check the score during a match, you'll see a timer counting down at the top of the screen. When this timer reaches zero, the "final battle" will begin and Mercy will spawn. After Mercy spawns, the game ends once you take out all the enemy heroes.