otclientv8/modules/game_features/features.lua

function init()
  connect(g_game, { onClientVersionChange = updateFeatures })
end

function terminate()
  disconnect(g_game, { onClientVersionChange = updateFeatures })
end

function updateFeatures(version)
    g_game.resetFeatures()
    
    -- you can add custom features here, list of them in modules\gamelib\const.lua
    g_game.getFeature(GameBot)
    
    if(version >= 770) then
        g_game.enableFeature(GameLooktypeU16);
        g_game.enableFeature(GameMessageStatements);
        g_game.enableFeature(GameLoginPacketEncryption);
    end

    if(version >= 780) then
        g_game.enableFeature(GamePlayerAddons);
        g_game.enableFeature(GamePlayerStamina);
        g_game.enableFeature(GameNewFluids);
        g_game.enableFeature(GameMessageLevel);
        g_game.enableFeature(GamePlayerStateU16);
        g_game.enableFeature(GameNewOutfitProtocol);
    end

    if(version >= 790) then
        g_game.enableFeature(GameWritableDate);
    end

    if(version >= 840) then
        g_game.enableFeature(GameProtocolChecksum);
        g_game.enableFeature(GameAccountNames);
        g_game.enableFeature(GameDoubleFreeCapacity);
    end

    if(version >= 841) then
        g_game.enableFeature(GameChallengeOnLogin);
        g_game.enableFeature(GameMessageSizeCheck);
        g_game.enableFeature(GameTileAddThingWithStackpos);
    end

    if(version >= 854) then
        g_game.enableFeature(GameCreatureEmblems);
    end

    if(version >= 860) then
        g_game.enableFeature(GameAttackSeq);
    end

    if(version >= 862) then
        g_game.enableFeature(GamePenalityOnDeath);
    end

    if(version >= 870) then
        g_game.enableFeature(GameDoubleExperience);
        g_game.enableFeature(GamePlayerMounts);
        g_game.enableFeature(GameSpellList);
    end

    if(version >= 910) then
        g_game.enableFeature(GameNameOnNpcTrade);
        g_game.enableFeature(GameTotalCapacity);
        g_game.enableFeature(GameSkillsBase);
        g_game.enableFeature(GamePlayerRegenerationTime);
        g_game.enableFeature(GameChannelPlayerList);
        g_game.enableFeature(GameEnvironmentEffect);
        g_game.enableFeature(GameItemAnimationPhase);
    end

    if(version >= 940) then
        g_game.enableFeature(GamePlayerMarket);
    end

    if(version >= 953) then
        g_game.enableFeature(GamePurseSlot);
        g_game.enableFeature(GameClientPing);
    end

    if(version >= 960) then
        g_game.enableFeature(GameSpritesU32);
        g_game.enableFeature(GameOfflineTrainingTime);
    end

    if(version >= 963) then
        g_game.enableFeature(GameAdditionalVipInfo);
    end

    if(version >= 980) then
        g_game.enableFeature(GamePreviewState);
        g_game.enableFeature(GameClientVersion);
    end

    if(version >= 981) then
        g_game.enableFeature(GameLoginPending);
        g_game.enableFeature(GameNewSpeedLaw);
    end

    if(version >= 984) then
        g_game.enableFeature(GameContainerPagination);
        g_game.enableFeature(GameBrowseField);
    end

    if(version >= 1000) then
        g_game.enableFeature(GameThingMarks);
        g_game.enableFeature(GamePVPMode);
    end

    if(version >= 1035) then
        g_game.enableFeature(GameDoubleSkills);
        g_game.enableFeature(GameBaseSkillU16);
    end

    if(version >= 1036) then
        g_game.enableFeature(GameCreatureIcons);
        g_game.enableFeature(GameHideNpcNames);
    end

    if(version >= 1038) then
        g_game.enableFeature(GamePremiumExpiration);
    end

    if(version >= 1050) then
        g_game.enableFeature(GameEnhancedAnimations);
    end

    if(version >= 1053) then
        g_game.enableFeature(GameUnjustifiedPoints);
    end

    if(version >= 1054) then
        g_game.enableFeature(GameExperienceBonus);
    end

    if(version >= 1055) then
        g_game.enableFeature(GameDeathType);
    end

    if(version >= 1057) then
        g_game.enableFeature(GameIdleAnimations);
    end

    if(version >= 1061) then
        g_game.enableFeature(GameOGLInformation);
    end

    if(version >= 1071) then
        g_game.enableFeature(GameContentRevision);
    end

    if(version >= 1072) then
        g_game.enableFeature(GameAuthenticator);
    end

    if(version >= 1074) then
        g_game.enableFeature(GameSessionKey);
    end

    if(version >= 1080) then
        g_game.enableFeature(GameIngameStore);
    end

    if(version >= 1092) then
        g_game.enableFeature(GameIngameStoreServiceType);
    end

    if(version >= 1093) then
        g_game.enableFeature(GameIngameStoreHighlights);
    end

    if(version >= 1094) then
        g_game.enableFeature(GameAdditionalSkills);
    end
    
    modules.game_things.load()
end