Portal

Valve · 2007 · $9.99 · Action · deal grade A

Measured on 2026-09-23 22:22 UTC, 12 days ago. The whole catalog is re-measured daily; a game that just launched can move fast between passes.

• Estimated net residual revenue: $50.5k to $75.7k per month
• Opportunity: $85.2k per month at x1.35 dormancy
• Estimated lifetime owners: 13.0M
• 99% positive across 199406 reviews · 1175.3 reviews/month

Why it's flagged

• Developer silent for 15 months
• Studio active elsewhere (18 titles tracked), so this one may welcome a partner
• Last discounted 3 months ago, 4 sales in the last 12 months
• Proven demand elasticity: x1.3 review velocity during past deep sales

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