Basically fun exploration. When it come to map gen you can mess with cities but be careful with dimension stack it is very fun at default but can freeze if messed with so when enabled make sure it say Immersive portals 4 then 2 overworld then nether in that order the go to build limit ;). Btw credit to all the awesome devs that made these mods so freeloaders like me can play. More mods like GalactiCraft and Twilight forest will be added as they are updated to 1.15.X so stay tuned. Tell me what mods to add into the pack in the comments.
Systems requirements: 7.5GB of allocated ram is recommended
Mod List:

"To the Bat Poles!"	EnderLanky	AdPoles-1.15.2-4.0.1.0-build.0009.jar
	[SBM] Merpig	BuiltBroken	SBM-Merpig-1.15.1-0.0.1.jar
	☃ Snow! Real Magic!	Snownee_	SnowRealMagic-1.15.2-1.7.5.jar
	🍊 Fruit Trees	Snownee_	FruitTrees-1.15.2-1.2.7.jar
	🥝 Kiwi	Snownee_	Kiwi-1.15.2-2.6.5.jar
	Advanced Chimneys	EnderLanky	AdChimneys-1.15.2-5.0.4.0-build.0032.jar
	AI Improvements	DarkGuardsman	AI-Improvements-1.15.2-0.3.0.jar
	All Mobs Attack Villagers	tallestegg_	allmobsattackvillagers-1.1-1.15.2.jar
	Aquaculture 2	Shadowclaimer	Aquaculture-1.15.2-2.0.13.jar
	AstikorCarts [Horse Carts]	MennoMax	astikorcarts-1.0.2-1.15.2.jar
	AutoRegLib	Vazkii	AutoRegLib-1.5-40.jar
	Autumnity	Markus1002	autumnity-1.2.0-1.15.2.jar
	Backpacked	MrCrayfish	backpacked-1.4.1-1.15.2.jar
	Bean Mod	jacobthefailure	beanmod-0.2.jar
	Bed Benefits	DarkhaxDev	BedBenefits-1.15.2-1.0.4.jar
	Bedspreads	TheIllusiveC4	bedspreads-FORGE-1.15.2-3.0.0.1.jar
	Beer	KrokoOnAir	Beer 1.3.jar
	Biomes O' Plenty	Forstride	BiomesOPlenty-1.15.2-10.0.0.345-universal.jar
	Biospheres Mod	Wolferus__	biospheres-1.5.15.5.5.5.5.5.jar
	Blur	tterrag1098	Blur-1.1.0-1.jar
	Bonsai Trees 2	davenonymous	BonsaiTrees-2.1.2.6.jar
	Bookshelf	DarkhaxDev	Bookshelf-1.15.2-5.5.33.jar
	Botania	Vazkii	Botania-r1.15-383.jar
	Botany Pots	DarkhaxDev	BotanyPots-1.15.2-2.0.14.jar
	Camera Mod	henkelmax	camera-1.6.5.jar
	Cheems Mod	Pepper_Bell	cheemsmod-1.0.5-fo-1.15.2.jar
	Corpse	henkelmax	corpse-1.15.2-1.0.4.jar
	Craftable Saddles	alexdaum1	Craftable Saddles [1.15.2]-1.3.jar
	Creeper AI Updated	srgnis	Creeper_AI_Updated-1.1.jar
	CrocMod	pbrane0	crocmod-1.15.2-1.5.1-9.jar
	Cucumber Library	BlakeBr0	Cucumber-1.15.2-3.0.5.jar
	Curios API	TheIllusiveC4	curios-FORGE-1.15.2-2.0.2.2.jar
	Cute Kiwi Birds - new animal	lordloss_	KiwiBirds-1.1.jar
	Death Counter	ohaiiChun	DeathCounter-1.15.2-1.2.0.jar
	Dimensional Dungeons	Catastrophe573	dimdungeons-1.051-forge-1.15.2.jar
	Doggy Talents	percivalalb	DoggyTalents-1.15.2-1.15.2.3.jar
	Dragon Mounts: Legacy	WolfSh0tz	DragonMountsLegacy-1.0.2.jar
	Dungeon Crawl	XIROC1337	DungeonCrawl-1.15.2-1.6.3.jar
	Dungeons & Artifacts	dthovrlrd	dungeonsartifacts-1.15.2-V.1.0.jar
	Economy Inc.	FlorentLeBelge	EconomyInc-1.6.8MC1.15.jar
	EmbellishCraft	Mapper	embellishcraft-1.15.2-2.2.0.0.jar
	Emerald Armor&Tools and not only	Max_Kuz	emeraldmod-1.0.jar
	End Portal Recipe	Serilum	endportrec_1.15-1.1.jar
	End: Reborn	elecatron	EndReborn [0.5.0].jar
	Ender Mail	Chaosyr	EnderMail-1.15.2-1.0.3.jar
	EnhancedSnowman	maxanier	EnhancedSnowman-1.15.2-1.0.1.jar
	EqualDragons	TechnicianLP	equaldragons-1.2.jar
	Extra Golems	skyjay1	extragolems-10.1.0.jar
	Fast Leaf Decay	olafskiii	FastLeafDecay-v22.jar
	FastWorkbench	Shadows_of_Fire	FastWorkbench-1.15.1-3.0.0.jar
	ForgeEndertech	EnderLanky	ForgeEndertech-1.15.2-6.0.2.2-build.0030.jar
	Forgiving Void	BlayTheNinth	ForgivingVoid_1.15.1-4.0.0.jar
	Four Bottles Brewing Stand Mod	drachenbauer32	fourbottlesbrewingstandmod-1.0.jar
	Gauges and Switches	wilechaote	rsgauges-1.15.2-1.2.2.jar
	Genetic Animals	mokiyoki	GeneticAnimals-0_5_2.jar
	Goblin Traders	MrCrayfish	goblintraders-1.2.0-1.15.2.jar
	Good Night's Sleep	ModdingLegacy	good-nights-sleep-1.15.2-1.0.3.jar
	Guard Villagers	tallestegg_	guardvillagers-1.15.2-1.0.6.jar
	Hwyla	TehNut	Hwyla-forge-1.10.8-B72_1.15.2.jar
	IAP [Omega Craft]	ArrowsendGaming	Industrial Agriculture[Omega Craft]-1.15.2-1.6.1.jar
	Immersive Portals (for Forge)	qouteall	immersive-portals-0.17(forMc1.15withForge).jar
	Incubation	Markus1002	incubation-1.0.3-1.15.2.jar
	Industrial Agriculture	ArrowsendGaming	Industrial Agriculture[Core]-1.15.2-1.7.0.jar
	Inventory Sorter	cpw	inventorysorter-1.15.2-17.0.0.jar
	Just A Raft Mod	Mrbysco	JustARaftMod-1.15.2-1.1.3.jar
	Just Another Rotten Flesh to Leather Mod	alexdaum1	JRFTL [1.15.2]-1.1.jar
	Just Enough Items (JEI)	mezz	jei-1.15.2-6.0.0.4.jar
	Large Ore Deposits	EnderLanky	AdLods-1.15.2-3.0.3.0-build.0035.jar
	Let Sleeping Dogs Lie	ohaiiChun	LetSleepingDogsLie-1.15.2-1.1.0.jar
	Libnonymous	davenonymous	libnonymous-1.15.2-1.1.1.5.jar
	LizardMod	pbrane0	lizardmod-1.15.2-1.2.1-10.jar
	Lollipop	owmii	Lollipop-1.15.2-1.0.15.jar
	Macaw's Bridges	sketch_macaw	mcw-bridges-1.0.4fix-mc1.15.2.jar
	Macaw's Furniture	sketch_macaw	mcw-furniture-1.0.1-mc1.15.1 1.15.2.jar
	Macaw's Windows	sketch_macaw	mcw-windows-1.0.1-mc1.15.2_1.15.1.jar
	Mapper Base	Mapper	mapperbase-1.15.2-1.1.0.0.jar
	Masonry	Shadowclaimer	masonry-1.15.2-0.3.4.jar
	Melon Golem	Tamaized	MelonMod-1.15-1.5.1.jar
	Miner Arcana Presents Astral	Starbreaker20	astral-1.2.10.jar
	Miner's Helmet	ModdingLegacy	mining-helmet-1.15.2-1.0.8.jar
	Misc Additions	BetterDeltric	MiscAdditions-1.2.3.jar
	MixinBootstrap	LX_Gaming	MixinBootstrap-1.0.3.jar
	Mob Heads	InsaneGames_	MobHeads-1.0.1-mc1.15.2.jar
	Moving Elevators	SuperMartijn642	movingelevators-1.2.14-mc1.15.jar
	MrCrayfish's Furniture Mod	MrCrayfish	furniture-7.0.0-pre16-1.15.1.jar
	Mutant Beasts	Chumbanotz	MutantBeasts-1.15.2-1.0.5.jar
	Mystical Agriculture	BlakeBr0	MysticalAgriculture-1.15.2-3.0.3.jar
	Naturally Charged Creepers	Serilum	nccreepers_1.15.2-1.1.jar
	Neat	Vazkii	Neat 1.6-20.jar
	Nether Portal Spread	Serilum	netherpspr_1.15-3.0.jar
	Netherite by DWNY	a_downey	Netherite 1.15.2 - 0.1.6.jar
	Netherup	gamesruleyears	netherup1.15.2v1.0.5.jar
	No Default Auto-Jump	al132	noautojump-1.15.2-1.jar
	Not Enough Enchantments	ShelterRin	NotEnoughEnchantments V0.0.1.jar
	Oh The Biomes You'll Go	aocawol	Biomes_You_Go-0.3.3-BETA.jar
	Omega Craft Mod	Cobbs_3	Omega Craft 4.1.1b.jar
	Patchouli	Vazkii	Patchouli-1.15.2-1.2-33.jar
	Pick Up Notifier	Fuzs_	PickUpNotifier-v1.1.2-1.15.2.jar
	Placebo	Shadows_of_Fire	Placebo-1.15.2-3.0.2.jar
	Portality	Buuz135	portality-1.15.2-2.1.2-aaa257f.jar
	Powah!	owmii	Powah-1.15.2-1.1.14.jar
	Pretty Pipes	Ellpeck	PrettyPipes-1.2.1.jar
	Quark	Vazkii	Quark-r2.1-235.jar
	Respawnable Pets	MoriyaShiine	respawnablepets-1.1.jar
	Ropes Mod!	TheGoldCrayon	tgcropesmod-1.15.2-1.2.0.jar
	Security Craft	Geforce132	[1.15.2] SecurityCraft v1.8.17.jar
	SimpleHarvest	TehNut	Harvest-forge-1.15.1-1.2.11-24.jar
	Sit	bl4ckscor3	sit-1.15.1-v1.3.jar
	SlimyBoyos	Jaredlll08	SlimyBoyos-2.0.1.jar
	Smaller Nether Portals	Serilum	smallernp_1.15-1.2.jar
	Snad - Back to the past	lazynessmind	snad-1.8.5.10a-1.15.2.jar
	Snow Under Trees	bl4ckscor3	snowundertrees-1.15.1-v1.0.jar
	Soft Snow Landing	EndlesNights	softsnowfallmod-mc1.15-v1.0.jar
	Space-BossTools	mrscauthd	BossTools-1.15.2-v28.jar
	SpiderMod	pbrane0	spidermod-1.15.2-1.0.0-8.jar
	Swamp Expansion	Farcr	swampexpansion-1.15.2-1.5.1.jar
	SwingThroughGrass	exidex	swingthroughgrass-1.15.2-1.4.0.jar
	The Endergetic Expansion	endergized	The-Endergetic-Expansion-1.15.2-v1.2.8.jar
	The Farlanders	ModdingLegacy	farlanders-1.15.2-1.1.2.jar
	The Lost Cities	McJty	lostcities-1.15-3.0.1-alpha.jar
	The Meth Mod	bigmouthfan69	The Meth Mod 1.15.2 V1.2.jar
	The Midnight	cipher_zero_x	themidnight-0.5.7-3.jar
	The Real Weed Mod	bigmouthfan69	Weed Mod 1.15.2 V1.4.jar
	The Starcilium Mod (Forge) 1.15+	witherlord00	starciliummod-1.15.2- 0.1.5.jar
	Thicker Snow on Grass	tfarecnim	thickersnowongrass-1.0.jar
	Tiny Mob Farm	davidmaamoaix	TinyMobFarm-1.15.2-1.0.6.1.jar
	Titanium	HRZNStudio	titanium-1.15.2-2.3.7.jar
	TNT Yeeter Mod	ModdingLegacy	tnt-yeeter-1.15.2-1.1.0.jar
	ToLaserBlade	Iunius118	ToLaserBlade-1.15.2-3.0.2.2.jar
	Trapcraft	percivalalb	Trapcraft-1.15.2-2.7.0.jar
	Trash	MageP	trash-1.15.2-0.1.4.jar
	TrashSlot	BlayTheNinth	TrashSlot_1.15.2-11.0.0.jar
	TurtleMod	pbrane0	turtlemod-1.15.1-1.2.0-6.jar
	Two Classic Flowers (Mini)Mod	elperritoentwitch	Two Classic Flowers (Mini)Mod 1.15.2.jar
	Ultra Amplified Dimension (Forge)	TelepathicGrunt_Reddit	ultra_amplified_dimension-1.15.2-7.4.2.jar
	V-Girl Armor Mod	valtiel_	[1.15.2] Valtiel s Girl Armor Mod-2.9.7.jar
	Waddles	Girafi	Waddles-1.15.2-0.8.6.jar
	Waystones	BlayTheNinth	Waystones_1.15.2-6.0.1.jar
	Xaero's Minimap	xaero96	Xaeros_Minimap_20.9.0_Forge_1.15.2.jar
	Xaero's World Map	xaero96	XaerosWorldMap_1.5.7_Forge_1.15.2.jar
	Yourin mod	bigmouthfan69	Yourin Mod 1.15.2 Weapon Update.jar

Stylix's Aurum Modpack