Here is an idea of how much damage you can do based on world length. Note that this does NOT factor in attack power, items, or gems. This is just BASE amounts assuming normal tiles & no attack power.

3 letters - 0.5 hearts damage
4 letters - 0.75 hearts of damage
5 letters - 1 heart of damage
6 letters - 1.5 hearts of damage
7 letters - 2 hearts of damage
8 letters - 2.75 hearts of damage
9 letters - 3.5 hearts of damage
10 letters - 4.5 hearts of damage
11 letters - 5.5 hearts of damage
12 letters - 6.75 hearts of damage
13 letters - 8 hearts of damage
14 letters - 9.5 hearts of damage
15 letters - 11 hearts of damage
16 letters - 13 hearts of damage

When an enemy is defeated, you're automatically cured of all your missing health, as well as any ailments affecting you or the tile grid. You'll also gain Experience that fills your Level Up bar. At the end of each chapter, it will fill up all the way, and you'll gain a boost to one of your attributes:

1. Health  - Lex's Heart meter. Each level up increases it by one Heart.
2. Attack  - Lex's damage power. Also increases a little with every fight.
3. Defense - Lex's damage resistance. Appears to only increase by level-up.

There are many items and treasures and the like for Lex to use to win, but chances are you might not win all the time, especially when it gets very hard. If you lose, you'll have to start the chapter all over! But not all is lost, as you will keep any items and even gem tiles you had when you went down, and Moxie's Mini-Game Hut will open up again, allowing you to get even more gems and potions to help you try again. Your experience should stay the same, too.

Each map/world in the game (called Books) features 10 levels (called Chapters), as well as Moxie's Mini-Game hut, which opens every few chapters for you to try and win some swag to help out in the battles. Each level features 5 enemies to fight, the last of which is a Boss Battle, which is of course a much harder fight than the previous minions. Each boss is guarding either a Treasure or a Companion for Lex to take with him on his journey. There are some unlockable modes you'll get as well as you beat the game:

1. TOME OF KNOWLEDGE - Complete Book 4 in Adventure.
2. MINI-GAMES - Complete Book 5 in Adventure.
3. ARENA - Complete Book 6 in Adventure.
4. ADVENTURE REPLAY - Complete Book 6 in Adventure.

Your tile grid is what you're gonna use to win this game, so study it well, and get used to it. The best thing you can have all over your grid is a lot of Gem Tiles, as they give helpful damage boosts & secondary effects to help take down enemies easier. But beware: Monsters can also mess with your tile grid, and all of their attacks are naturally detrimental.

NORMAL TILES ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ Normal Tiles are just that: Normal. All brown tiles with black letters on them, and little dots in their corners to indicate their values. It's a lot like Scrabble or the original Bookworm, only in those games, their values were in number form. A letter's value here is dependant on how hard it is to use it in a word. Check the little dot in the corner:

1. GOLD - The highest scoring letters.
2. SILVER - The middle scoring letters.
3. BRONZE - The lowest scoring letters.

Here is a reference for which letter falls into which category:

1. GOLD - J, K, Qu, X, Z
2. SILVER - B, C, F, H, M, P, V, W, Y
3. BRONZE - A, D, E, G, I, L, N, O, R, S, T, U, Wildcard (see below)

In addition, PopCap themselves revealed mathematical specifics on just how much value each letter has individually! Check this out here:

1. 1 Letter - All Bronze dots
2. 1.25 Letters - Silver dots: B, C, F, H, M, P
3. 1.5 Letters - Silver dots: V, W, Y
4. 1.75 Letters - Gold dots: J, K
5. 2 Letters - Gold dots: X, Z
6. 2.75 Letters - Gold dots: Qu

So if you were to spell the word "WAXY," it'd count as 6 letters instead of 4!

GEM TILES ¯¯¯¯¯¯¯¯¯¯¯ Gem Tiles are one of the must-have things in this game. You won't see them at the very beginning of the game, but they eventually will become available for use and abuse. They are received automatically by spelling very good words (6-letter words and above, or less if using certain treasures), but they can also be won in Moxie's Mini-Games, or by overkilling enemies (the more damage you do past what they have left in health, the better gem you get). Note these are listed by rarity.

1. AMETHYST - Purple. 15% damage boost & inflicts 2-turn Poison.
2. EMERALD - Green. 20% damage boost & heals Lex 2 hearts.
3. GARNET - Orange. 30% damage boost & inflicts 2-turn Power Down.
4. RUBY - Red. 35% damage boost & inflicts 3-turn Burn.
5. SAPPHIRE - Blue. 25% damage boost & inflicts 1-turn Freeze.
6. CRYSTAL - Pink. 50% damage boost, purifies Lex & the grid, & makes Lex invincible for 1 turn.
7. DIAMOND - White. 100% damage boost, fully heals Lex, & gives 1 of each type of potion.

DAMAGED TILES ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ Damaged Tiles are what certain enemy attacks can inflict on you. They are all very detrimental and can especially hurt if you lack any Blue Potions, or are inflicted with Power Down. Some enemies you encounter will have nothing BUT tile-hurting attacks! Watch out. All Damaged Tiles will revert back to normal after a certain amount of turns, which usually varies by the enemy.

1. SMASHED - Smashed Tiles can be used but will do no damage.
2. LOCKED - Locked Tiles cannot be used until the turn count runs out.
3. PLAGUED - Plagued Tiles do no damage if used, and can infect other tiles.

This information is made by Smoke_Rulz, https://gamefaqs.gamespot.com/pc/962334-bookworm-adventures-volume-2/faqs/57503

Modified, Proofread, and Distributed by Meidion, all information is used with consent and permission.