Games like JumpStart: the cozy loop lives on — free, no download

🐾 Petropolis Play

Best for: the adopt-a-buddy, play-minigames, decorate-your-space loop — free, no download, still there tomorrow

Full disclosure: this is our game, and it's why this list exists. So the honest thing first: we're not a learning-curriculum world, and we can't replace JumpStart's educational games — nothing can, and anyone who says otherwise is selling something. But if what you miss is the other half of JumpStart — adopting a buddy, earning coins in minigames, decorating your space — that loop is right here, free, no download. Adopt one of four free species (pup, kitten, bunny or turtle — colors picked, names given by you) in under 60 seconds, no account; feed, play and rest them as their Hunger, Happiness and Health gently tick down; earn PawCoins in minigames (never bought); dress them up and drag-and-drop their room into something unmistakably theirs. Everything saves on your own device — so your buddy is still there tomorrow, and no server shutdown can take them, because no server holds them. Free forever in any browser, lovely on phones, with one optional $4.99 one-time Full Version — six more species (including one very small, very polite dragon), two more minigames, up to three pets at once — never a subscription. Don't take our word for it: it's embedded above. The six still-running neighbors are ranked below, every one re-verified live, catches printed.

🐾 Adopt a buddy free right now

⭐ Neopets

Best for: the one JumpStart world that survived — a whole planet of pets, still in your browser

🟢 Still running — re-verified live September 23, 2026 (neopets.com serving: "Adopt adorable Neopets and dive into the fantastic world of Neopia, all from your browser!")

The most remarkable story on this list: JumpStart bought Neopets from Viacom in March 2014 and ran it through the NetDragon years — and when JumpStart closed in 2023, Neopets was the one world that made it out alive, spun off into an independent company (World of Neopia, Inc.) that still runs it today. Create and name your Neopets, feed and play with them, earn Neopoints in a decades-deep arcade, restock shops, battle, build a Neohome — the biggest surviving world of the era, free in a plain browser tab. The honest catches: it's a 1999 codebase being renovated in public — some corners still creak and many Flash-era games are still being rebuilt; the prettiest cosmetics and conveniences lean on premium NC and a membership; and Neopia is a planet, not an afternoon — the depth is the point, but it's real. We keep a whole page of games like Neopets, too.

🧙 Prodigy

Best for: the actual educational torch — a math-and-English RPG that's still growing

🟢 Still running — re-verified live September 23, 2026 (prodigygame.com serving: standards-aligned Math and English games, free for teachers)

The honest answer for the other half of JumpStart — the learning half. Prodigy is the closest living relative of the grade-based JumpStart games: a full RPG world — pets, buddies, quests, a house to decorate — where battles are fought by answering standards-aligned math (and now English) questions, free for teachers and classrooms, with parent memberships over the extras. If your JumpStart memory is really a Math Blaster memory, this is where that DNA lives on. The honest catches: it's curriculum-first — the game is genuinely a vehicle for practice questions, which is wonderful for a kid and not what an adult nostalgic is looking for; membership upsells are persistent; and it's built for the classroom-and-kitchen-table set — accounts, parent dashboards and all.

🧸 Webkinz Classic

Best for: the plush-adoption ritual — a pet that's yours, room and all

🟢 Still running — re-verified live September 23, 2026 (webkinz.com serving: "the original Toy-to-Life game… two games to enjoy", new plush in stores)

The other great adopt-a-pet world of the 2000s, still going: Webkinz Classic keeps the ritual alive — adopt a pet, name it, feed it, play the arcade for KinzCash, decorate its house room by room — now through apps and a desktop client, with Ganz still selling plush with codes (new ones 'in stores soon' at fetch time). Of everything on this list, its loop is the closest cousin to ours. The honest catches: full access is tied to plush codes and a Deluxe membership — the free tier is a sampler, not the whole world; the Classic game lives in apps now rather than a plain browser tab; and the modern Webkinz Next world is a different, slimmer game than the one you remember.

🦊 Animal Jam

Best for: an animal world with a learning heart — National Geographic's old partner, still online

🟢 Still running — re-verified live September 23, 2026 (animaljam.com serving: Play Free, Animal Jam Classic, memberships)

The liveliest kids' animal world left standing: Animal Jam (launched 2010 with National Geographic) lets you create an animal, decorate a den, play minigames for gems and pick up real animal facts along the way — the most JumpStart-flavored of the surviving worlds, education included. The honest catches: the original browser game was retired with Flash — the world now lives in apps (mobile and Steam), with Animal Jam Classic as a desktop download; a membership and premium sapphires sit over the best bits; and a shared multiplayer world means chat filters and parent dashboards, for better and worse.

🏝️ Poptropica

Best for: the kids' quest world that made it out of the Flash fire — islands, stories, costumes

🟢 Still running — re-verified live September 23, 2026 (now playing through Coolmath Games; classic islands rebuilt piecemeal)

Jeff Kinney's island-hopping world (2007) survived the same Flash end-of-life that helped sink so many of its neighbors: Poptropica plays on today through Coolmath Games, with story islands to solve, a character to costume, pets to follow you around and a clubhouse to decorate. If your JumpStart memory is really a 'kid-sized online world that respected you' memory, Poptropica is the other survivor. The honest catches: the classic islands are being rebuilt piecemeal, so some favorites are still missing in action; a membership sits over extras and early access; and it's quests-first — pets and decorating are the garnish, not the meal. We keep a whole page of games like Poptropica too.

🗺️ MaraPets

Best for: the independent classic — a 2004 pet site that never sold out and never shut down

🟢 Still running — re-verified live September 23, 2026 (marapets.com serving: hundreds of players online at fetch time, the day's events running)

The quiet miracle of the genre: MaraPets has been online since 2004 — older than the World of JumpStart itself — and it's still free, still independent, still in a plain browser tab, with pets to create and collect, restockable shops, quests, clubs, and minigames that pay out Marapoints. When JumpStart's server switched off, this is the kind of place that didn't: no parent company left to pull the plug. The honest catches: it looks its age — a dense, retro interface built desktop-first (mobile-friendly now, but busy); the deep systems (restocking races, battles, auctions) come with a real learning curve; and the free classic runs on optional account upgrades and player support.

A buddy that's the point

In the World of JumpStart you raised pets beside your Jumpee; School of Dragons was nothing but your dragon. A real successor keeps a companion that's yours — named by you, waiting for you — not a dog skin swapped into a platformer, or a level that forgets you when the tab closes.

Coins you earn by playing

JumpStart's arcades paid out for playing, and the loop funded the fun. We checked what every pick actually hands you for a minigame win — and said so plainly when the honest answer is 'a cash shop stands between you and the good bits.'

A space to make yours

The decorate-your-space half of the fantasy: a room, a den, a hideout that stays decorated. We checked what each pick lets you build and keep — because a space that resets every visit isn't yours, it's a diorama.

A door you can verify

After July 1, 2023, "still online" stopped being a slogan and became a promise that needs proof. Every pick below was live-fetched and re-verified still running on September 23, 2026 — and the honest catches are printed under each: memberships, app-only, aging codebases. No dead links dressed up as picks.