WEEKLY-RELEASES · 2026-08-24
Last Week's Releases -- 2026-08-17
Four picks from Steam (2 puzzle, 2 adjacent). The wordless adventure Tukoni: Forest Keepers and sudoku-metroidvania Sudoku Mansion headlined a quieter week
This week
Last week (Aug 17-23) was quiet for big pure-puzzle launches on Steam. Nothing enormous landed this time.
Sudoku Mansion (from the official Steam screenshots)
Still, what did show up was worth a look. The wordless, gesture-driven adventure Tukoni: Forest Keepers opened to 346 reviews at 99 percent positive, and Sudoku Mansion, which folds sudoku variants into a metroidvania map, arrived quietly too.
On the mystery and observation side: the always-on idle RPG Desktop Detective, and Detective Sherlock: Shadow Stalker, a new kind of mystery game where AI generates dialogue on the fly.
Four picks this week. For games I have not played myself, I am working from store reception, developer posts, and media coverage -- the level of certainty is marked in each writeup.
This week's picks
Tukoni: Forest Keepers
A wordless point-and-click adventure told entirely through drawings and gestures. You play a forest spirit named Traveller, solving handcrafted puzzles -- lock-picking, item matching, clue-hunting -- across four locations. The five-person Kyiv studio Dream Operator lost over a year of development time after the 2022 invasion began, but finished with Oksana Bula, illustrator of the original picture books, on board as art director; the game won the art award at DevGAMM 2025. It opened to 346 reviews at 99 percent positive, on top of 66,000-plus wishlists from the demo alone. A gentle pick for anyone who wants a puzzle adventure with no text at all.
Tukoni: Forest Keepers (from the official Steam screenshots)
Sudoku Mansion
Sudoku variants folded into a metroidvania mansion. Each room you clear introduces one new sudoku mechanic, building toward 50-plus handcrafted grids. It is designed by sudoku setter Nurator, and the neat trick is that a grid you already solved can be reinterpreted later under a different "puzzle class," yielding an entirely different answer. It joins a small wave of "sudoku metroidvanias" this year, alongside games like Sudokuvania 2. Reviews are still thin at launch (20 reviews, 77 percent positive), but it is worth a look if you like a ruleset that keeps quietly expanding on you.
Desktop Detective
An idle detective RPG meant to sit in a corner of your screen while you work. You investigate crime scenes, gather clues, level up, and grow stronger across repeated "ascension" runs. It is the follow-up to Desktop Defender, whose pre-launch demo cracked Steam's top played demos list, and this one's free demo reportedly did the same. Worth being upfront: the core loop is closer to an idle game wearing a detective costume than an actual deduction puzzle. A pick for people who want to watch a case grow rather than solve one.
Detective Sherlock: Shadow Stalker
A mystery adventure set in 19th-century Dartmoor, where you play Sherlock Holmes interrogating suspects. Its headline feature: instead of dialogue choices, you "freely chat" with NPCs, whose lines and voice acting are generated by AI in real time -- the studio is careful to note all code and 3D assets were made by hand. NPCs can lie, and remember what you said earlier. The Early Access build holds about 20 hours of content, with full release planned 3-6 months out. It launched to 118 reviews at 94 percent positive. Worth trying if you want a different texture from a traditional deduction game like Sherlock Holmes: Crimes and Punishments.
Detective Sherlock: Shadow Stalker (from the official Steam screenshots)
Hiki's pick of the week
My pick this week is Tukoni: Forest Keepers. A wordless puzzle adventure you can sink into without straining, even on a tired brain. A good fit for a slow weekend morning with a cup of coffee.
On my radar
He Who Watches, published by Draknek & Friends, is due September 2. Its wall-walking, perspective-bending mechanic has been generating buzz for a while -- I will cover it properly once it is out.
Closing
No heavyweight puzzle launches this week, but four genuinely different picks: a hand-drawn wordless adventure, a sudoku metroidvania, and a mystery game where AI writes the dialogue. If one of them caught your eye, pencil it into the weekend. I will keep copying next week's release calendar into my notebook, curious what one-line rule turns up next.
Sources
Store pages and media referenced in this article:
・Steam: Tukoni: Forest Keepers
・Tech Times coverage of Tukoni: Forest Keepers
・Thinky Games listing for Sudoku Mansion
・PR Newswire announcement for Desktop Detective
・Steam: Detective Sherlock: Shadow Stalker
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