DDO allows players to combine up to three of any available classes, although this is considered a more advanced way to build a character. For multiclass characters, Hit Points, Base Attack Bonus and Saving Throws of each different class are added. For example, a rogue/fighter who is level 10 (with five levels of each class) receives a Hit Point total that's equal to both a level 5 rogue and a fighter added together.

Read more in the Compendium.

Able to learn a huge variety of spells, wizards can outfit themselves for a variety of challenges. They can assist a party, summon allies, or destroy opponents – all with the power of elements.

Wizards are the only class that can learn all arcane spells and receive bonus metamagic feats. These feats give them more ways to manipulate the power and duration of their spells. At taverns and rest shrines, wizards can switch to different spells. This allows them to customize on the fly, and always be able to choose the right spell for the situation.

The Wizard is considered challenging to solo with, though is a great boon to a party.

Read more in the Compendium.

Born with the innate ability to use magic, sorcerers have huge pools of spell points and can gain bonus spell points from magic items. Sorcerers have access to fewer spells than wizards, but make use of enhanced spell points by casting more often. Sorcerers cannot switch spells at taverns or rest shrines. They can switch spells, but must undergo a special ritual that can only be done once every few days.

Sorcerers are powerful but frail, and as a result it's challenging to solo with one.

Read more in the Compendium.

Stealthy and sly, rogues pride themselves on their skillful ability to disarm traps, unlock doors and sneak up on foes. Rogues make great scouts and can easily blend with the shadows. They also have a powerful ability called sneak attack. With the proper skill and strategy, they can use stealth and sneak attack in combination to devastating effect.

Rogues are integral to any group that wishes to avoid traps, as they are the only class that can disarm them, but it can be a challenge to play solo.

Read more in the Compendium.

Rangers are extremely versatile combatants that can act as scouts, wield two weapons at once, and be lethal with a bow.

Rangers can cast several useful spells and begin to learn these at level 4. They can even learn remarkable techniques like shooting through groups of enemies with a single arrow or firing multiple arrows simultaneously.

Due to their versatility, Rangers are considered a good class to solo with.

Read more in the Compendium.

Paladins are supremely resilient and have a good balance of offensive and defensive skills at their disposal. Through their devotion and purity, paladins gain many special abilities. They can deal extra damage to evil creatures, boost their own saves, and use a special ability, Lay on Hands, to send powerful healing energy to allies.

At level 4, paladins get the first spells they can use to aid themselves or their party. Paladins also get immunities to harmful effects like disease and fear, and radiate powerful protective auras that help defend all nearby allies. In a group setting, paladins are often the last man standing.

A high survivability combined with some excellent offensive abilities makes paladins a very good solo class.

Read more in the Compendium.

Monks use ki energy to perform amazing techniques in battle. This vital energy allows them to launch powerful combination attacks and project amazing beneficial effects. Usually fighting without weapons and armor, monks can assist allies or destroy enemies, but require more time to master than other melee classes.

In order to use their special abilities, monks must be in a state of physical and mental balance – centered. To remain centered, a monk cannot wear armor and must fight unarmed or with special monk weapons like staffs and kamas.

A skilled monk player will be very successful playing solo.

Read more in the Compendium.

Fighters can use more weapons, armor and shields than any other class. Often focusing on mastering a specific set of gear and combat style, fighters achieve victory in battle through many different methods. They get more feats than any other class, and as a result, have several attack options in battle. Fighters can knock an enemy off their feet or damage multiple enemies at once with a great cleave.

Fighters feature versatility and survivability, making them a good class to play solo.

Read more in the Compendium.

Channeling divine magic, clerics cure and heal allies, but can also blast enemies with divine power. Using a special ability called Turning, clerics can attack undead or assist allies. Armor and shield use grants them greater survivability than other spell casters. Gaining all their spells while leveling up, clerics do not need to inscribe new spells.

Able to wear armor and heal themselves, clerics are good class to play solo.

Read more in the Compendium.

Using spells, skills, and powerful magic songs, bards offer amazing support and simultaneously strengthen friends while weakening foes. Songs are some of the bard's most impressive abilities; bard songs can boost an ally's abilities or subdue opponents. Bards also wield a variety of spells, allowing them to heal teammates or attack and manipulate enemies. With this special blend of abilities, bards can make any party more effective, regardless of composition.

Bards are challenging to play solo, as their greatest strength is enhancing their party.