Portal 2 (and Portal) Motion Sickness: Why It Happens & What Helps
Portal 2 has no comfort settings and no FOV slider in its menus, and its central mechanic reorients your view in a single frame. Valve ran into the problem during development: Adhesion Gel, which let you walk on walls and ceilings, was cut because playtesters got motion sick. What shipped is the gentler version, and it still gets to people.
PC, PlayStation, Xbox, Switch · first-person · No official fix · Player-reported motion-sickness risk: one of the most commonly reported triggers in gaming.
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Risk levels summarise what passengers and riders commonly report, not measured testing.
Key facts
- Portal 2 (and Portal) runs on PC, PlayStation, Xbox, Switch.
- The camera is first-person.
- Player reports place it in the high band for motion sickness.
- The game ships no official comfort settings.
- It sits at number 14 in our ranking of the 20 games players report most for motion sickness.
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Why Portal 2 (and Portal) can trigger motion sickness
A portal changes which way is down with no transition, so your eyes jump to a new orientation while your inner ear registers nothing at all. Flinging routes chain that with long falls and abrupt stops, which is sustained fast self-motion with no matching signal from your body. The cut Adhesion Gel is the clearest evidence the studio saw this coming: walking on walls made playtesters sick, so it did not ship. Portal 2 exposes no comfort options in its menus and no FOV slider, though PC players can change field of view with the cl_fov console command. Beyond that, the levers are how you play rather than what you set.
- Portals that flip your orientation with no transition
- Flinging routes: long falls chained into abrupt stops
- No field-of-view slider in the menus
- Chambers solved by repeated fast repositioning
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Comfort settings in Portal 2 (and Portal)
Portal 2 (and Portal) ships no official comfort settings.
Portal 2 has no comfort menu and no FOV slider. On PC the cl_fov console command is the only way to widen the view, and console versions have no equivalent. Valve did cut the wall-walking Adhesion Gel during development after playtesters got motion sick, so the shipped game is already the milder version. What is left is pacing and off-screen help.
| Setting | Where | Recommendation |
|---|---|---|
| Comfort settings | None in the game | Portal 2 has no motion comfort options and no FOV slider in its menus |
| Field of view (PC) | Console command cl_fov | The only way to widen the view. Console versions have no equivalent |
| A fixed point on screen | Not a game setting | Players commonly report holding your gaze on one spot through a fling helps |
| Session pacing | Not a game setting | Break between chambers rather than saving it for the end of a chapter |
One guide explains these settings for every game: how field of view, motion blur, head bob and camera shake trigger motion sickness.
Know someone who gets motion sick?
Send them the app that helps stop it, drug-free, in about 90 seconds, works with any headphones. Free to download.
What helps beyond the settings
- Hold your eyes on a fixed point through a fling instead of tracking the walls past you
- Solve a chamber, then stop. The natural break points come often here
- Play co-op sitting further back from the screen
- A drug-free sound-therapy app like Dizzout is designed to help once symptoms start, through any headphones
The fixes people reach for once they step away from the screen are covered separately, with the trials attached: the remedy verdicts.
Frequently asked questions
Why does Portal 2 make me motion sick?
Portals reorient your view in a single frame, so your eyes land somewhere new while your inner ear registers no movement at all. Flinging routes add long falls with abrupt stops. It is a short, sharp version of the mismatch behind all motion sickness, repeated every few seconds in the harder chambers.
Does Portal 2 have an FOV slider?
Not in the menus. On PC you can change it with the cl_fov console command, and console versions have no equivalent. There is no head bob toggle and no camera shake slider either, so Portal 2 is one of the games where settings are not the answer.
Is it true Valve cut a mechanic because of motion sickness?
Yes. Adhesion Gel, which let you walk up walls and across ceilings, was cut during development after playtesters got motion sick. It is documented in cut-content archives and on the Portal wiki. The game that shipped is the version that survived that testing.
Other game motion-sickness guides
Sources & further reading
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Based on publicly reported player experiences and each game's documented settings, as of July 2026. Settings menus change with updates, so check your version. Game names are trademarks of their respective owners; Dizzout is not affiliated with or endorsed by them. Motion-sickness sensitivity varies by person, so this is informational, not a game review or a substitute for a doctor's advice.