Uploaded November 2025 | Updated September 2026, 2 weeks ago
Watching back Markiplier’s original UCN videos/streams, it always fascinated me how he wanted to go about the game. Instead of adding 1-2 characters at 20 AI, he wanted to try upping the difficulty of everyone at the same level. In hindsight this isn’t a very efficient way to play, which is why I thought it’d be a brilliant idea to do them all.
With a lot of these characters, they work on a system of “grouped AI”, in which the difficulty doesn’t change that much unless big increases are made. The Puppet and the plushies for example only get more aggressive every 10 AI levels, so AIs 1-9 are all the same, and AIs 10-19 are all the same. Some (Funtime Foxy) don’t even change based on AI at all and are the same regardless of what you set them to. And then most of them are just an AI in so and so chance to appear/change when their spawn condition is met, so for them they would progressively get more and more successful spawns. By the time I got to 10 and higher, that’s where the game got notably harder.
I tried a modified version of the strategy I created for intended route. With this strategy I actually check the halls and the duct system. That way I only flip the sign when necessary, I also get to check for Freddy instead of guessing when I should shut the left door, and I know when (if) I have to use the heater instead of just doing it after every camera flip. Once I got to 50/20 Mode though I just reverted back. Puppet ruins everything because the music box winds down ridiculously fast to the point where you’ll basically be down by a quarter wind in the time you took to check the halls and the ducts, and that’s not even considering Toy Freddy and the vent system.
*Timestamps*
50/0 Mode- 0:00
50/1 Mode- 4:58
50/2 Mode- 9:56
50/3 Mode- 14:59
50/4 Mode- 20:04
50/5 Mode- 25:10
50/6 Mode- 30:20
50/7 Mode - 35:33
50/8 Mode - 40:48
50/9 Mode - 46:04
50/10 Mode - 51:24
50/11 Mode - 56:47
50/12 Mode - 1:02:11
50/13 Mode - 1:07:38
50/14 Mode - 1:13:08
50/15 Mode - 1:18:41
50/16 Mode - 1:24:15
50/17 Mode - 1:29:49
50/18 Mode - 1:35:28
50/19 Mode - 1:41:10
50/20 Mode - 1:46:52
*Get Ultimate Custom Night*
Steam (free) - store.steampowered.com/app/871720/Ultimate_Custom_Night
Gamejolt (free) - gamejolt.com/games/UltimateCN/349545
iOS - apps.apple.com/gb/app/ultimate-custom-night/id1499849161
Android - play.google.com/store/apps/details?id=com.clickteam.ultimatecustomnight&hl=en_IN
Xbox/Microsoft Store - xbox.com/en-GB/games/store/ultimate-custom-night/9PHZ6MLV5NDD/0010
Nintendo Switch - nintendo.com/en-gb/Games/Nintendo-Switch-download-software/Ultimate-Custom-Night-1962050.html
PlayStation - store.playstation.com/en-gb/product/EP5268-CUSA25078_00-0354631220460890
Watching back Markiplier’s original UCN videos/streams, it always fascinated me how he wanted to go about the game. Instead of adding 1-2 characters at 20 AI, he wanted to try upping the difficulty of everyone at the same level. In hindsight this isn’t a very efficient way to play, which is why I thought it’d be a brilliant idea to do them all.
With a lot of these characters, they work on a system of “grouped AI”, in which the difficulty doesn’t change that much unless big increases are made. The Puppet and the plushies for example only get more aggressive every 10 AI levels, so AIs 1-9 are all the same, and AIs 10-19 are all the same. Some (Funtime Foxy) don’t even change based on AI at all and are the same regardless of what you set them to. And then most of them are just an AI in so and so chance to appear/change when their spawn condition is met, so for them they would progressively get more and more successful spawns. By the time I got to 10 and higher, that’s where the game got notably harder.
I tried a modified version of the strategy I created for intended route. With this strategy I actually check the halls and the duct system. That way I only flip the sign when necessary, I also get to check for Freddy instead of guessing when I should shut the left door, and I know when (if) I have to use the heater instead of just doing it after every camera flip. Once I got to 50/20 Mode though I just reverted back. Puppet ruins everything because the music box winds down ridiculously fast to the point where you’ll basically be down by a quarter wind in the time you took to check the halls and the ducts, and that’s not even considering Toy Freddy and the vent system.
*Timestamps*
50/0 Mode- 0:00
50/1 Mode- 4:58
50/2 Mode- 9:56
50/3 Mode- 14:59
50/4 Mode- 20:04
50/5 Mode- 25:10
50/6 Mode- 30:20
50/7 Mode - 35:33
50/8 Mode - 40:48
50/9 Mode - 46:04
50/10 Mode - 51:24
50/11 Mode - 56:47
50/12 Mode - 1:02:11
50/13 Mode - 1:07:38
50/14 Mode - 1:13:08
50/15 Mode - 1:18:41
50/16 Mode - 1:24:15
50/17 Mode - 1:29:49
50/18 Mode - 1:35:28
50/19 Mode - 1:41:10
50/20 Mode - 1:46:52
*Get Ultimate Custom Night*
Steam (free) - store.steampowered.com/app/871720/Ultimate_Custom_Night
Gamejolt (free) - gamejolt.com/games/UltimateCN/349545
iOS - apps.apple.com/gb/app/ultimate-custom-night/id1499849161
Android - play.google.com/store/apps/details?id=com.clickteam.ultimatecustomnight&hl=en_IN
Xbox/Microsoft Store - xbox.com/en-GB/games/store/ultimate-custom-night/9PHZ6MLV5NDD/0010
Nintendo Switch - nintendo.com/en-gb/Games/Nintendo-Switch-download-software/Ultimate-Custom-Night-1962050.html
PlayStation - store.playstation.com/en-gb/product/EP5268-CUSA25078_00-0354631220460890
