Unlike Doom which was initially only available through shareware and mail order, Doom II was a commercial release sold in stores.

Unlike other games that utilize the " monster infighting " feature ( such as Doom ), non-player characters do not have to be in the enemy's line-of-fire to enter " infighting " mode ; some NPCs ( particularly law enforcement and military characters ) are programmed to attack anyone brandishing a weapon or firing same ( an NPC fleeing in panic can also trigger an attack ).

Unlike Wolfenstein 3D, which had essentially been a plotless shooter game, Hall wanted Doom to have an elaborate story.

Unlike most other games released at the time, including its primary competitor, Unreal Tournament, Quake 3 requires an OpenGL-compliant graphics accelerator to run.

Unlike previous 3D games Quake used the pipelined Pentium FPU to do perspective correction calculations in the background while texture mapping, effectively doing two tasks at once.

Unlike his fellow generals Quake and Blastcharge his creation was not shown in the comic.

Unlike the preceding and widely used id Tech 3 ( Quake III Arena engine ) and id Tech 2 ( Quake II engine ), id Tech 4 has had less success in licensing to third parties.

Unlike the first PlayStation Descent which was considered mostly a direct port, Descent Maximum was designed to better accommodate the console and contained 30 entirely new levels.

Unlike its relatives, the aardwolf does not hunt large animals ; instead it eats insects, mainly termites-one aardwolf can eat about 200, 000 termites during a single night by using its long, sticky tongue to capture them.

Unlike its predecessor DES, AES does not use a Feistel network.

Unlike other self-governing Australian territories ( e. g. Norfolk Island, Northern Territory ), the ACT does not have an Administrator.

Unlike many other statistics, a player's OPS does not have a simple intrinsic meaning, despite its usefulness as a comparative statistic.

Unlike other prophets, Obadiah does not present a “ turn or burn ” message, simply a message of inevitable doom as a consequence of previous actions.

Unlike a computer virus, it does not need to attach itself to an existing program.

Unlike the gradient and divergence, curl does not generalize as simply to other dimensions ; some generalizations are possible, but only in three dimensions is the geometrically defined curl of a vector field again a vector field.

Unlike other college football divisions and most other sports — collegiateor professional — the Football Bowl Subdivision, formerly known as Division I-A college football, does not employ a playoff system to determine a champion.

Unlike the penis, the male variant of the clitoris, it usually does not contain the distal portion or opening of the urethra and is therefore not used for urination.

Unlike the system described above, the astronomical system does not consider years, it only counts days.

Unlike in a piano action, the tangent does not rebound from the string ; rather, it stays in contact with the string as long as the key is held, acting as both the nut and as the initiator of sound.

Unlike in many other Christian countries, St. Nicholas does not play a major role in Polish Christmas, but instead, is celebrated on his Saint feast day of December 6.

Unlike reforms in the United Kingdom, New South Wales, Tasmania, Victoria, South Australia and soon to be Western Australia, this law does not have a retrospective effect, which is unpopular with some advocates of the reform.

Unlike Swedish and Norwegian, Danish does not have more than one regional speech norm.

Unlike the neighboring Continental Scandinavian languages, the prosody of Danish does not have phonemic pitch.

Unlike other heliozoans, the microtubules are not in any regular geometric array, there does not appear to be a microtubule organizing center, and there is no distinction between the outer and inner cytoplasm.

Unlike baryonic dark matter, nonbaryonic dark matter does not contribute to the formation of the elements in the early universe (" Big Bang nucleosynthesis ") and so its presence is revealed only via its gravitational attraction.

Unlike other, more traditional forms of higher education, open education generally does not offer recognized degrees.

Unlike the TEM, where electrons of the high voltage beam carry the image of the specimen, the electron beam of the scanning electron microscope ( SEM ) does not at any time carry a complete image of the specimen.

Unlike many object-oriented languages, but like Smalltalk, Eiffel does not permit any assignment into fields of objects, except within the features of an object, which is the practical application of the principle of information hiding or data abstraction, requiring formal interfaces for data mutation.

Unlike all subsequent Pauline epistles, 1 Thessalonians does not focus on justification by faith or questions of Jewish-gentile relations, themes that are covered in all other letters.

Unlike foil and sabre, Épée does not use " right of way ", and allows simultaneous hits by both fencers.

Unlike many other P2P applications Freenet does not provide comprehensive functionality itself.

Unlike denaturing methods, such as SDS-PAGE, native gel electrophoresis does not use a charged denaturing agent.

Unlike most mammals, the mare does not have an increase of LH right before ovulation.

Unlike earlier texts like Recipes for Fifty-Two Ailments, which was excavated in the 1970s from a tomb that had been sealed in 168 BCE, the Inner Canon rejected the influence of spirits and the use of magic.

Unlike the frequency domain approach, the use of the state space representation is not limited to systems with linear components and zero initial conditions.

Unlike in many other European countries, the general image of Święty Mikołaj in Poland is basically no different to the one of the Anglo-Saxon Santa Claus ( he is said to live in the North Pole, wear red clothes and a white beard, use reindeers to pull his sleigh, or enter houses via the chimney ).

Unlike other leftist punk bands who use more direct sloganeering, Dead Kennedys ' lyrics were often snide.

Unlike a phone book, however, DNS can be quickly updated and these updates distributed, allowing a service's location on the network to change without affecting the end users, who continue to use the same hostname.

Unlike DLP systems ( where it is possible to use the same procedure for squaring and multiplication ) the EC addition is significantly different for doubling () and general addition () depending on the coordinate system used.

Unlike Common Lisp, Scheme existed at the time Stallman was rewriting Gosling Emacs into GNU Emacs, but he chose not to use it because of its comparatively poor performance on workstations, and he wanted to develop a dialect which he thought would be more easily optimized.

Unlike furigana, the use of okurigana is a mandatory part of the written language.

Unlike Christian fundamentalist groups, Islamist groups do not use the term fundamentalist to refer to themselves.

Unlike D & D, however, the first two editions of Gamma World do not use a concept of character class, and increases in Rank do not affect the character's skills or combat abilities.

Unlike modern taxonomists, these authors did not use the suffix " ales " in naming their orders.

Unlike CT scans or traditional X-rays, MRI does not use ionizing radiation.

Unlike most machine pistols, which use magazines in the pistol grip or in a vertical box, the M950 uses a 50-round or 100-round helical magazine which is mounted parallel to the barrel.

Unlike most other video game consoles of its time, the Neo Geo does not use tilemap background layers.

Unlike Texas hold ' em, a player cannot play four or five of the cards on the board with fewer than two of his own, nor can a player use three or four hole cards to disguise a strong hand.

Unlike other common energy storage in prior use such as wood or coal, electricity must be used as it is being generated, or converted immediately into another form of energy such as potential, kinetic or chemical.

Unlike the cyanobacteria, these bacteria do not produce oxygen ; they typically use hydrogen sulfide rather than water as the electron donor.

Unlike the rotary engine, however, radial engines use a conventional rotating crankshaft in a fixed engine block.

Unlike the version used for the DVD, Sony Pictures cropped out the top and bottom parts of the frame, while restoring previously cropped images on the sides, from the 35 mm film source, to use the entire 16: 9 frame.

* Unlike omnibuses, but like trolleybuses, ( electric ) trams give off no exhaust emissions at point of use.

Unlike virtual memory, a system virtual machine allowed the user to use privileged instructions in their code.

Unlike his contemporaries, Corbusier often chose to use timber windows rather than metal ones.