Idle Startup is a clean, low-stress incremental game about turning a laptop-and-an-idea into a full-blown tech empire. On Mac, it’s the kind of “check in, upgrade, watch numbers rise” experience that fits perfectly between work sessions—while still offering long-term depth through milestones, mastery, and a steady cadence of unlocks.

From a garage to a global empire

You begin small: pick a skill and let it run. Progress bars fill, XP accumulates, and money steadily stacks up. That income then feeds back into the core loop—buy upgrades, level faster, unlock more, and expand into new tiers of your company as your startup grows from scrappy beginnings into a corporate machine.

Six skills, each with its own upgrade journey

The heart of Idle Startup is its six skills, each featuring a dedicated upgrade store structured as a tree of nine upgrades. Upgrades are gated by both skill level and cost, creating a satisfying push-and-pull: do you specialize hard to reach the next power spike, or spread investment across multiple skills for steadier overall growth?

Every skill also includes milestones at levels 25, 50, 75, and 99. Hitting these thresholds pays off with permanent, company-wide bonuses, which makes focused leveling feel meaningful even if you plan to diversify later.

Simple to learn, deeper the longer you play

Idle Startup is intentionally easy to parse: select a skill, earn, upgrade, repeat. But it doesn’t stop at the basics. There’s always a “next thing” in view—new upgrades, bigger costs, new departments, another achievement, another milestone breakpoint.

And when you max a skill, progression doesn’t end. Maxed skills keep generating Mastery, a slow-growing, permanent money bonus that continues to scale over time—ideal for players who like long-tail progression rather than hard caps.

Offline progress and time-respecting boosts

For Mac players who prefer idle games that don’t demand constant attention, Idle Startup supports offline earnings while the game is closed (up to 4 hours). There’s also a free recurring Coffee Break speed boost you can claim a few times a day, providing a nice burst without pushing ads or friction.

Your save is backed by Steam Cloud, making it easy to continue across devices. (Steam Deck is supported via Proton.)

Optional boost packs (not required)

Idle Startup includes three optional purchases for players who want to accelerate progress, but importantly, the game is designed to be fully playable and completable without spending anything:

  • Energy Drink: 2× speed boost for 4 hours
  • Coffee Pot: 2× speed boost for 24 hours
  • Productivity Suite: one-time permanent 2× speed boost and unlimited offline earnings

There are no ads, and these boosts are presented as optional time-savers rather than gates.

Key features

  • One-click idle loop—pick a skill, it runs itself
  • 6 skills across 4 company tiers, from Garage Startup to Corporate Office
  • Per-skill upgrade trees plus a company-wide store—66 upgrades total
  • Milestone upgrades at levels 25/50/75/99 that buff your entire company
  • Skill Mastery: maxed skills keep earning a permanent money bonus
  • 29 Steam achievements, from First Day to Trillionaire
  • Two interface themes: Midnight and Poolside FM
  • Offline progress (earn while away)
  • Steam Cloud saves (Windows and macOS)
  • Free recurring speed boost, no ads ever
  • Optional one-time boost purchases—never required, never gated
  • Clean, modern interface designed to stay out of your way

Mac system requirements

Minimum

  • OS: macOS 11.0 (Big Sur) on Apple Silicon; macOS 10.12 (Sierra) on Intel
  • Processor: Any Intel Core or Apple Silicon
  • Memory: 2 GB RAM
  • Graphics: Built-in (Intel HD / Apple GPU)
  • Storage: 250 MB available space
  • Additional Notes: Universal binary (Intel + Apple Silicon)

Recommended

  • OS: macOS 13.0+
  • Processor: Any Apple Silicon
  • Memory: 4 GB RAM
  • Graphics: Any modern integrated or discrete GPU
  • Storage: 250 MB available space

Why it works well on Mac

Idle Startup’s lightweight footprint, universal binary support (Intel + Apple Silicon), and “play it your way” pacing make it a natural fit for macOS. Whether you want a relaxing background game while you multitask or a long-term progression climb toward mastery and milestones, it’s an incremental experience built around steady satisfaction rather than pressure.