The Legend of Bum-Bo

Edmund McMillen · 2019 · $14.99 · Adventure · deal grade B

Measured on 2026-10-02 07:12 UTC, 4 days ago. The whole catalog is re-measured daily; a game that just launched can move fast between passes.

• Estimated net residual revenue: $736 to $1.1k per month
• Opportunity: $1.8k per month at x1.90 dormancy
• Estimated lifetime owners: 226.0k
• 81% positive across 5941 reviews · 11.4 reviews/month

Why it's flagged

• Developer silent for 5.6 years
• Studio active elsewhere (6 titles tracked), so this one may welcome a partner
• Store page localized in only 1 language(s)
• Last discounted 0 months ago, 3 sales in the last 12 months
• Proven demand elasticity: x1.4 review velocity during past deep sales

Analyst notes (AI-assisted)

Note written 2026-08-23; the live figures above take precedence over any numbers in it.

A match-4 roguelike puzzle adventure set in The Binding of Isaac universe, combining Bejeweled-style mechanics with Isaac lore.

The Legend of Bum-Bo sits in a narrow niche: it's Edmund McMillen IP with genuine Isaac fan affinity (80% positive, 226k lifetime units, $728k net revenue), but it's dormant, no developer communication in 66 months, only 3 discounts in a year, and current residual revenue ($767/mo mid, $614–920 range) suggests it's coasting rather than growing. For a publisher seeking a stable backlist title with proven IP leverage and existing community goodwill, this is a low-risk hold; for a studio considering a revival campaign (new content, crossover DLC, console port), the math only works if you can unlock lapsed Isaac players at scale. Most realistic play: watch.

• Risk: Match-4 puzzle roguelikes are a crowded subgenre; Bum-Bo's modest median playtime (3.9 hours) and 33% still-playing rate suggest limited stickiness versus competitors.
• Risk: No developer posts in 66 months and only 9.5 reviews per month (6-month average) indicate the title has entered a quiet phase with minimal momentum or marketing.
• Risk: Sentiment dropped 13.9 points recently (66.7% positive vs 80.6% all-time), hinting at aging mechanics or unpatched friction points that critics mention (unavoidable damage, perceived uselessness of some tiles).

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