The Worlds Report - Issue #2
- On Roblox, Simulator/Tycoon/Idle ceded demand share for a third straight week (42.6% to 38.6% to 34.4% of new visits), and the freed-up demand fanned out to Roleplay/Life/Social (15.4%) and RPG/Adventure (6.0%), with Survival/Co-op holding #2 at 15.8%.
- On Fortnite, demand concentrated into two structural defaults: PvP at 57.7% of CCU and Obby/trickshot at 18.1% now own 75.8% of CCU between them.
- Roblox's broadening is mostly giants re-registering big deltas (Brookhaven +286M, Blox Fruits +129M), so read it for direction and discount the WoW sizes; the clean same-world signal is Animal Hospital (Anomaly), the #1 accelerator for a third straight week (+113M).
- Fortnite's GTA-6 island wave is fully spent (1 GTA island left in the top-15 by peak CCU, down from five-of-top-9 two weeks ago), and Horror slid 48%.
- Scorecard: 4 hit, 2 partial, 0 miss; both partials held their thesis and slipped on one tight leg. Running track record now 18 hit, 4 partial, 2 miss.
Running record: 18 hits · 4 partials · 2 misses
Last week's six calls, graded against this week's numbers. The four that held were structural reads; both partials held their thesis and missed on a single numeric leg.
- ◐ PARTIAL
Build a deep-retention co-op loop on Roblox; Survival/Co-op holds at least 16% and Simulator/Tycoon stays at or below 40%. HIGH
Simulator/Tycoon came in at 34.4% (at or below 40%, a third week ceding share), but Survival/Co-op was 15.8%, a hair under the 16% leg. The rotation thesis held (Animal Hospital was still the #1 accelerator, +113M); this week's fresh demand leaned to Roleplay and RPG instead.
- ✓ HIT
Don't chase the GTA-6 island wave on Fortnite (at most 2 GTA-VI islands in the top-15 by peak CCU). MED-HIGH
One GTA-VI island held the Fortnite top-15 by peak CCU. The wave stayed receded, and the GTA-driven Simulator line eased.
- ✓ HIT
Treat Fortnite PvP (Red vs Blue / 1v1) as the durable default (PvP holds at least 45% of CCU). MED
Fortnite PvP came in at 57.7% of CCU, higher than the rebound week rather than lower.
- ◐ PARTIAL
Ride the brainrot aesthetic across platforms (at least 1 brainrot island in the Fortnite top-15 and 1 brainrot world in the Roblox top-15). MED
Steal a Brainrot was #3 on Roblox by new visits (+319M), but no brainrot-titled island held the Fortnite top-15. The meme kept selling on Roblox and churned out of Fortnite's board.
- ✓ HIT
The Survival-to-Fortnite lane stays open (still zero Survival islands in the Fortnite top-15). LOW-MED
Fortnite Survival was 0.3% of CCU with zero islands in the top-15. The lane stayed open for a third straight week.
- ✓ HIT
VRChat: ship a returnable destination (occupancy stays utility/social and an avatar-search or IP world is among the favorites gainers). LOW
Top occupancy stayed utility and social, and avatar-search worlds were among the week's favorites gainers, more than one at once. Both legs met.
Read this chart with two caveats. First, Simulator/Tycoon is not on it because its story is share, not WoW: its absolute new visits still rose (+20%), but the tracked pie grew, so its share fell to 34.4% for a third straight week. It is the week's structural decliner. Second, the big Roblox risers (Roleplay +127%, RPG +170%) are giant-driven and inflated by a panel-composition change: Brookhaven alone added +286M new visits and Blox Fruits +129M, so read those as direction, not magnitude. The clean structural risers are on Fortnite (PvP +47%, Obby +70%).
Survival / Co-op PvE
15.8% of new visits
Roblox
0.3% of Fortnite CCU
Fortnite Creative
The engine flagged three cross-platform gaps this week, the most this report has tracked, and only one of the three is an opening a creator should build into. The useful work is reading why the thin side is thin on each one.
Survival/Co-op is 15.8% of new visits on Roblox (holding #2) and 0.3% of CCU on Fortnite (a peak of 74 across two islands, none in the top-15). This gap is thin on Fortnite for a fixable reason. Roblox is winner-take-all (the top-10 hold 54.6% of new visits), so a deep co-op retention loop compounds into a giant there, which is where the demand pools. Fortnite Creative is long-tail (median island around 9 CCU on roughly 11-minute sessions), so a deep survival grind starves on churn. Nobody has fit the format to those short sessions yet.
How a creator exploits it: build the deep version for Roblox (where depth pays), and ship a disposable short-round co-op version into Fortnite's open lane. A short-round co-op survival built for one 8-to-12 minute loop matches Fortnite's session length and has zero incumbents. The observation-driven, non-twitch hook is cheap to build and returnable, which is the profile a small creator can actually ship. This is the third straight week the lane has stayed clean and open.
The same rotation, absorbed two different ways
Roblox and Fortnite absorbed the same genre rotation two different ways this week. Roblox is winner-take-all (top-10 hold 54.6% of demand), so when Simulator cooled a third week the freed-up demand flowed into existing giants in retention and social genres (Brookhaven, Adopt Me, Blox Fruits). The read for a small creator is that trend-chasing doesn't compound here; the giants catch the rotation, and a game that holds players is the one that grows into an incumbent. Fortnite Creative is long-tail (top-10 hold 15.8%, median island 9 CCU on roughly 11-minute sessions), so it absorbs demand by cloning: the GTA wave reverted while PvP plus Obby swelled to 75.8% combined, since on a long-tail curve the templates just cycle as fresh clones spawn. A genre sitting down three weeks there is a refill signal (the clone pool drains and refills, it doesn't die off). VRChat runs on a third shape, destination-driven, where demand clusters around places people return to and a proven category can hold more than one winner at once.
Roblox
top-10 share 54.6% top-1 10%
Winner-take-all. The top 10 hold 54.6% of new visits; a game that holds players compounds into a giant. (Down from 62.8% last week, partly because the tracked panel grew; the concentration is still about 3.5 times Fortnite's.)
Fortnite Creative
top-10 share 15.8% top-1 2.1%
Long tail. The median island peaked at 9 CCU on roughly 11-minute sessions; a fresh niche island is viable and disposable here.
VRChat
top-10 share 37.7%
Destination-driven. Occupancy clusters around worlds people return to; favorites act as the return signal, and a proven category can hold more than one winner.
VRChat, in brief
Utility and social destinations held the top occupancy tier again: avatar-search tools, video and chill rooms, and sleep hangouts, with social-deduction the only game format near the top. The avatar-search utility lane was not single-winner this week, with more than one search-and-hangout world gaining favorites at once. IP-themed fan destinations keep showing up among the week's favorites gainers, which fits the pattern that VRChat rewards a place people keep coming back to.
Analyst notes
Three weeks, one read. The calls that graded out were built on structure, a genre concentrating and a cross-platform gap staying open on a curve that stays winner-take-all. The two partials each held their thesis and slipped on a single number: Survival landed at 15.8% against a 16% bar, and the brainrot meme held Roblox while its Fortnite islands left the top-15. That is the third week running where the structural reads kept holding up.
Next week we are watching whether the Roblox idle-to-co-op rotation keeps compounding through Animal Hospital while the giants absorb the rest, and whether Fortnite stays concentrated in its two default templates or the clone pool cycles again. The Survival-to-Fortnite lane is the cheap build to try, since it is the one flagged gap this week that is open just because nobody has fit the format to Fortnite yet.
Each call below gets graded in next week's issue against the metric named on it.
-
On Roblox, build the one sticky co-op or anomaly loop that can become an incumbent; on a winner-take-all curve, out-retaining is the only path a small creator has. HIGH
Graded next week on: An anomaly or observation co-op title stays a top-5 Roblox accelerator, and Roblox Survival/Co-op holds at least 13% of new visits.
-
Don't build a shallow idle-collect clone on Roblox; the genre has ceded share three weeks running. MED-HIGH
Graded next week on: Roblox Simulator/Tycoon share stays at or below 36% (the slide continues rather than snapping back).
-
On Fortnite, ship a fast, disposable island in one of the two default templates (Red vs Blue PvP or trickshot-parkour); build for churn, not retention. HIGH
Graded next week on: Fortnite PvP and Obby combined hold at least 65% of CCU.
-
Take the Survival-to-Fortnite arbitrage, but only as a short-round co-op (one 8-to-12 minute loop), not a grind. MED
Graded next week on: Still zero Survival islands in the Fortnite top-15 by peak CCU (the lane stays open).
-
The GTA-6 island theme is spent; don't start one. MED
Graded next week on: At most 2 GTA-VI-themed islands appear in the Fortnite top-15 by peak CCU.
-
On VRChat, ship the second-best tool or destination in a proven, multi-winner category; a lane that already works still has room for another entrant. LOW
Graded next week on: VRChat top occupancy stays utility/social, and at least 1 avatar-search or IP-themed world is among the week's favorites gainers.
- WARN Read Roblox week-over-week as direction, not magnitude, this week. The same-world panel (worlds tracked in both weeks) fell 814 to 651 even as total tracked breadth grew 1,039 to 1,183, so genre WoW percentages, especially Roleplay +127% and RPG +170%, are inflated by composition (giants re-registering large deltas). The same-world accelerating signal is clean; weight share and direction over the percentage.
- INFO We refined how the report classifies Fortnite genres this week after finding a batch of battle and PvP islands mis-tagged by the platform's generic tags. Both weeks were recomputed on the corrected mapping, so the Fortnite splits are internally consistent but are computed differently than Issue #1's. Auto-genre tags remain noisy, so read Fortnite genre shares directionally.
- INFO Both weekly spot-checks passed: a top Roblox world read within about 6% of the public API on live players (dead-on for cumulative visits and favorites), and a rising Fortnite island within about 1% of a third-party 24-hour peak, with its all-time peak on its release day (a real launch surge, not a metrics artifact).
- INFO Fortnite island codes rotate through discovery, so per-island week over week is not possible; genre trends compare the genre populations week to week. VRChat reads stay genre-level (occupancy and favorites momentum only).
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