Piyo's Adventure
- Side-Scrolling Action
- iOS / Android
- Japanese / English
- Free to Play
Run, stomp, blast. Seven bosses including the Dark Priestess, and eight costumes that change how you fight. Five online leaderboards.
Veriquest / Works
Veriquest's software development arm. Games, study apps and practical software, planned, built and run in house. Three titles are live on iOS (Android in closed testing).



Puzzle, horror, action: three games live. Two more are in development.
Run, stomp, blast. Seven bosses including the Dark Priestess, and eight costumes that change how you fight. Five online leaderboards.
Blocks crumble like sand; line up one color across a row to clear it. Two modes: Normal, where you compete for score, and Mindful, played without the clock.
A puzzle where you find the kanji at the centre of four two-character words. The more you solve, the higher your rank and the more there is to wear.
Given 社□, 機□, □議 and □話, the answer is 会. 30–90 seconds a puzzle — one-handed and silent, even on a train. Images are from a build in development.
A side-scrolling 2D horror: spot the anomalies on a night street and make your way to Block 14. A red sky, flickering streetlights, a huge red moon — 41 anomalies in all.
Whatever you wish for turns up at the university's lost-and-found window. In exchange, someone disappears — one at a time, and nobody notices even that. The story of a girl who keeps the records, and a man who does not disappear. An idealist SF novel game. Images are from a build in development.
A problem-set app for learning logic, from the basics to applications. Work a proof out on paper, then check it step by step. Aiming to let you study without a textbook. Images are from a build in development.
Coming SoonPlanned and supervised by an outside partner; Veriquest takes on the system design, the development and the technical operation.
A web app that takes a date and time of birth and computes the birth chart, its parameters and a proprietary FPTI diagnosis. A PWA, more languages and native apps for iOS and other platforms are planned. Images are from a build in development.
Web version in developmentOnline features like leaderboards and bestiaries are built in house too.
For Logica, we rebuilt the teaching order and the exercise format from scratch.
Tools to cut everyday hassle. A tax-filing assistant is one thing on the drawing board.
Commissioned development for businesses — moving a shop's membership cards into an app (member card, points, notices), for instance. Drawing on experience in AI and DX from the concept stage, we work alongside you from sorting out requirements.
Commissioned development is taken on by System development; the examples are there too.
We build on web technology and ship native iOS / Android apps from one codebase.
Fixing bugs and shipping the update are part of the build.
Rather than bolting on a translation later, we design with the text pulled out.
Try the pre-release app. There is no fee and no other condition.
Our motto: "turning ideas into things that run".
Renamed from NullPo Works in 2026. The developer, the apps, and the support channel are unchanged.
How a game feels is decided by playing it as we build.
All three live titles are free to play, with ads. Logica is planned to charge for some features.
It is currently in closed testing; registered testers can install it from Google Play. See Become a tester.
Let us know through the form below. Including the app name, your device, OS version, and the steps to reproduce it helps us find the cause faster.
The name changed to Veriquest Works. The apps and the support channel continue unchanged.
Yes. A business system or app — moving a shop's membership cards into an app, for instance — is handled by Veriquest Systems (System development); the examples and the enquiry form are on that page. Website production is handled by Veriquest Studio.
Yes. As with FPTI Diagnosis in 03, the partner plans and supervises while Veriquest handles the system design, the development and the technical operation. The division of roles and the way of working are settled in the first meeting. Use "Development enquiry" in the form.
Bug reports, tester applications, development enquiries — all through this one form.