100 ways to engage the senses

[Wepwawet]

for humid, arctic, arid, etc type settings you could adjust the thermostat appropriately for the day. Though, use this one with caution, most people don't smell good when they sweat too much, or other people might just zone out if they're too busy feeling hot/cold.

Instead, use one of those multi colored lamps to light the room blue for arctic cold ambiance, and orange or yellow for hot desert places.
Colours are very effective at emulating temperature, and there's no sweating or shaking because of too hot or too cold

 

[Heathen72]

So, from posts above we have
11. Extinguishing candles to represent loss of sanity and the approach of the end of humanity
12. Frayed lamp cords or wired chairs to evoke the sense of electrocution
13. Nerf guns to the face to create the sense of surprise and pain caused by a trap
14. Using flatulence increasing chilli to set a swampy 'atmosphere'
15. Appropriate music including 'theme song'
16. Conceptart.org
17. Pre-recorded sound effects of weather and dungeon 'events (creaky doors etc)
18. Adjusting thermostat to simulate gameworld temperature
19. Adjusting lighting colours to simulate gameworld temperarues
20. Mood lighting

 

[Dannyalcatraz]

Don't forget, consumables like onions, beers and carbonated drinks will enhance the "chilli effect."