Upcoming this year
12/1/2025 (Monday) - 2/28/2026 (Saturday)
Winter - December – February
Snow and slush weather has a chance to appear in the overworld alongside the Freezing biome modifier.
12/23/2025 (Tuesday) - 12/27/2025 (Saturday)
Christmas - 23–27 December
Jouluhiisi will spawn (24th–26th). Kantele room grants wand tinkering effect (23rd–27th).
12/30/2025 (Tuesday) - 1/2/2026 (Friday)
New Years - 30 December – 2 January
Powerful Firework launching boxes, Pata, will rarely spawn at the Forest start location. It has a 12.5% chance to appear.
Upcoming next year
4/30/2026 (Thursday) - 5/1/2026 (Friday)
Vappu / Walpurgis Night - 30 April – 1 May
Sima and Beer will replace 20% of potions.
6/19/2026 (Friday)
Juhannus / Midsummer - Friday between June 19 and June 25
Tappurahiisi will be Effect drunk.png Drunk, beer bottles ("Kaljapullo") and drunk Hiisi will appear in the Hiisi Base and on the Lake island, the in-game time stays stuck on 12:00, Juhannussima Potion Juhannussima and Beer Potion Beer Potions replace regular spawns at a 9% chance.
8/24/2026 (Monday)
Team Fortress's birthday - 24 August
A variant of Snipuhiisi will rarely spawn in the Snowy Depths and Meat Realm that throws jars of Urine instead of shooting bullets. (A reference to Jarate in that game)
10/31/2026 (Saturday)
Halloween - 31 October
Pumpkins and carved Jack o' lantern pumpkins (including a 3-eyed variant) will spawn in parts of the overworld
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