SHENZHEN I/O

Zachtronics · 2016 · $14.99 · Indie · deal grade B

Measured on 2026-10-04 19:57 UTC. The whole catalog is re-measured daily; a game that just launched can move fast between passes.

• Estimated net residual revenue: $853 to $1.3k per month
• Opportunity: $2.0k per month at x1.90 dormancy
• Estimated lifetime owners: 244.0k
• 95% positive across 4537 reviews · 13.2 reviews/month

Why it's flagged

• Developer silent for 4.1 years
• Studio active elsewhere (9 titles tracked), so this one may welcome a partner
• Store page localized in only 2 language(s)
• Last discounted 0 months ago, 8 sales in the last 12 months
• Proven demand elasticity: x1.5 review velocity during past deep sales

Analyst notes (AI-assisted)

Note written 2026-08-25; the live figures above take precedence over any numbers in it.

A puzzle game about circuit design and assembly-language programming wrapped in a corporate espionage story, built by Zachtronics.

SHENZHEN I/O sits in a rare niche: educational-adjacent indie with legitimately strong retention (median 22.65h, 83% still playing) and remarkably stable residual revenue despite zero active promotion in 47 months. The 94.9% positive score and steady low-volume review stream suggest a locked-in audience that derives satisfaction from optimization and intellectual challenge. This is a quiet catalog winner for patient acquirers seeking evergreen puzzle IP with a teaching bent, or for publishers building a 'serious games' or STEM-adjacent publishing tier. Most realistic play: watch.

• Risk: Narrow appeal: puzzle-programming games attract a small, self-selecting demographic unlikely to grow without heavy marketing spend.
• Risk: Assembly and circuit simulation mechanics may age poorly or feel dated if a sequel or platform shift occurs without careful design continuity.

This case as Markdown · Estimates carry ±30-50% error per title.