Jogaço. Crysis simplesmente debulha em matéria de TUDO. Já fechei duas vezes e agora estava atrás de cheats para Crysis. Jogar roubando também é muito divertido!!!

As instruções que achei estão em inglês, mas é simples, edite o arquivo que pede no primeiro parágrafo com as instruções das linhas que seguem, não tem erro!

Crysis

Cheat mode:
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the “diff_easy.cfg”, “diff_normal.cfg”, or “diff_hard.cfg” file in the “\crysis\game\config\” directory to change game play under the Easy, Normal, or Hard difficulty settings. Insert the following lines to get God mode and unlimited ammunition. This may also be done in the demo version of the game.
Kristofer Brozio.

Effect	Line in .cfg file
God mode	g_godMode = 1
Unlimited ammunition	i_unlimitedammo = 1
No energy loss	g_suitCloakEnergyDrainAdjuster = 0
No energy cost	g_suitRecoilEnergyCost = 0
Run faster	g_suitSpeedMult = 2.85
More armor points	g_suitArmorHealthValue = 900.0
Instant health regen	g_playerSuitArmorModeHealthRegenTime = 0
Instant health regen while moving	g_playerSuitArmorModeHealthRegenTimeMoving = 0
Set health regen time to 0	g_playerSuitHealthRegenTime = 0
Set regen time while walking to 0	g_playerSuitHealthRegenTimeMoving = 0
No waiting until regen starts	g_playerSuitHealthRegenDelay = 0
Instant energy	g_playerSuitEnergyRechargeTimeArmor = 0
Instant energy while moving	g_playerSuitEnergyRechargeTimeArmorMoving = 0
Set energy regen time to 0	g_playerSuitEnergyRechargeTime = 0
Do not wait until energy regen starts	g_playerSuitEnergyRechargeDelay = 0
Extra health	g_playerHealthValue = 900.0
Set difficulty, “1″ is easy, “4″ is most difficult	g_difficultyLevel = 1
AI ignores player	ai_IgnorePlayer = 1
No weapon limit	i_noweaponlimit = 1
Speed suit never runs out of energy	g_suitSpeedEnergyConsumption = 1
Rate at which time passes; “1″ is default	time_scale = <number>
Toggle melee attacks while sprinting	g_meleeWhileSprinting = <0 or 1>
Fall speed in meters/second that causes death; “13.7″ is default	pl_fallDamage_SpeedFatal = <number>
Maximum speed in meters/second at which you take no damage; “8″ is default	pl_fallDamage_SpeedSafe = <number>
Set swim speed; “4″ is default	pl_swimBaseSpeed = <number>
Set speed at which you jump out of water; “1″ is default	pl_swimJumpSpeedBaseMul = <number>
Walking movement speed; “1″ is default	g_walkmultiplier = <number>
Toggle vehicle invincibility	v_goliathmode = <0 or 1>
Multiplies punch strength by this factor; “1″ is default	cl_strengthscale = <number>

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Developer mode:
Start the game with the -DEVMODE command line parameter. Then, press one of the following keys during game play to activat the corresponding cheat function.

Effect	Key
Toggle first and third person view	[F1]
Jump to next checkpoint	[F2]
Toggle fly and ghost modes	[F3]
Jump to previous checkpoint	[F10]
Get missile launcher, shotgun, alien MOAC	[Keypad 1]
Unlimited ammunition	[Keypad 2]
Debug menu	[Keypad Enter]

Com estas batotas para Crysis fica muito interessante o jogo. Você pode se divertir muito.

Boa sorte com os cheats!