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π Biomes & Terrain
ποΈ Biome Difficulty Ranking Essential
Your starting biome directly determines your game experience. Here is a ranking from easiest to hardest, based on beginner-friendliness.
| Biome | Difficulty | Characteristics | Verdict |
|---|---|---|---|
| Temperate Forest | Trivial | Year-round or long growing season, abundant wood and animals, moderate temperatures | Best for beginners |
| Arid Shrubland | Trivial | Year-round growing, fewer trees but enough, hot but survivable | Second pick for beginners |
| Tropical Rainforest | Easy | Year-round growing, extremely rich resources | High disease rate (malaria/sleeping sickness), need a good doctor |
| Boreal Forest | Medium | Short growing season (20-30 days), cold winters | Need heating + greenhouse, plenty of wildlife for hunting |
| Swamp | Medium | Fertile soil + year-round growing | Difficult to build on, high disease rate, slow movement |
| Tundra | Hard | Extremely short growing season (10-20 days) | Barely any farming, rely on hunting and trading |
| Desert | Hard | Hot year-round, but no wood, no animals, no fertile soil | Every inch of arable land is precious |
| Extreme Desert | Very Hard | Almost no plants or animals | Survive on cannibalism + trading |
| Ice Sheet | Very Hard | Perpetual winter, no growing season | Survive on cannibalism + geothermal greenhouse |
| Sea Ice | Hell | Nothing at all, not even stone | Pure masochism |
π Biome Difficulty Spectrum
See at a glance each biome's survival difficulty, growing season, and temperature range.
πΊοΈ Terrain Type Selection Guide Essential
Besides the biome itself, the map's terrain elevation is just as important. Pay attention to these options when choosing your landing site.
| Terrain Type | Advantages | Disadvantages | Best For |
|---|---|---|---|
| Flat | Easy to build, unlimited expansion | No natural cover, exposed on all sides | Great for beginners learning base layout |
| Small Hills | Some hills to mine and take cover behind | Not enough mountain for a fortress, low infestation risk | Good balance |
| Large Hills | Plenty of mountain for natural walls | Moderate infestation risk | Recommended for intermediate players |
| Mountainous | Almost all mountain = strongest defense | Frequent infestations + time-consuming mining | Best for fortress builders |
| Coastal | Ocean on one side = one less direction to defend | No resources on water, takes up map space | Great combined with mountains |
π‘ Starting Recommendation
Beginners: Large Hills + Temperate Forest = the safest start. Mountains, trees, fertile soil β offense and defense in one package.
Beginners: Large Hills + Temperate Forest = the safest start. Mountains, trees, fertile soil β offense and defense in one package.
π Hidden Factors That Affect Your Choice
Many beginners don't realize these details are what truly determine whether you survive the early game.
- πͺ¨ Stone Type: Granite > Limestone > Sandstone > Slate β wall durability varies by 3x. Granite walls have 1000 HP, Slate only 330 HP. Check what stone spawns on your map before settling.
- π± Soil Fertility: Regular soil 100% / Rich Soil 140% (dark green patches, prioritize these) / Gravel 70% (only good for haygrass). Scan the map for dark green soil before planning your fields.
- πΏ Marble vs. Sandstone: Marble has +1 beauty (great for sculptures and floors), Sandstone is the fastest to mine. Early game with limited labor, go with sandstone.
- π Rivers: A river means a natural speed bump for enemies plus watermill generators (stable 1100W clean power). But rivers take up map space and can split your base β plan ahead with bridges or choke points.
- β οΈ Ancient Dangers: Don't break into those ancient structures (pale gray walls) right away. They might contain dormant mech clusters that will wipe out an early colony. Wait until you have guns and armor.
- π€οΈ Roads: A road passing through your map means more frequent trade caravans. Settle near roads β trade routes determine whether you survive the winter.
- π Latitude: Closer to the equator = hotter, year-round growing. Closer to the poles = colder, even permafrost. Check the latitude lines on the world map before choosing β don't blunder into an ice sheet unknowingly.
π‘οΈ Seasons & Temperature Survival Guide Must Learn
RimWorld's weather and temperature mechanics are where beginners most often crash and burn. Understanding them in advance is key to surviving them.
| Weather Event | Effect | Threat | Countermeasure |
|---|---|---|---|
| Heat Wave | Spikes temperature +20Β°C | Pawns get heatstroke, can die indoors without AC | Passive cooler (needs wood) + cowboy hat + restrict work hours |
| Cold Snap | Drops temperature -20Β°C | Crops freeze, pawns get frostbite | Campfire + parka + indoor farming (hydroponics or greenhouse) |
| Volcanic Winter | Global cooling -10~-20Β°C, lasts months | Crops grow extremely slowly, solar panel efficiency drops | Stockpile food early + geothermal power + supplement with hunting |
| Toxic Fallout | Map-wide toxic fallout, outdoors = poisoning | Can't go outside, animals die, plants wither | Everyone stays indoors + rely on stockpiles + build roofed corridors between buildings |
β οΈ Extreme weather events can stack
Cold Snap + Volcanic Winter can reach -60Β°C. Stockpiling food and wood in advance is critical β don't wait until it hits to prepare.
Cold Snap + Volcanic Winter can reach -60Β°C. Stockpiling food and wood in advance is critical β don't wait until it hits to prepare.